Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1760f47ecfca92c…

MALICIOUS

PDF

76.6 KB Created: 2021-06-25 17:43:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: c07aab6ca82293364a68aebfc1e65718 SHA-1: f03dfcdc6e3f9cf2a614af147bf9ba92fd4e52ac SHA-256: a1760f47ecfca92c89c054dfaec34ea45d2cfada1701ad4534d5c80423bd8dfe
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://dineflon.com//files/4958531460.pdf In PDF document text
    • https://conexus-study-abroad-travel.com/ckfinder/userfiles/file/46866791651.pdfIn PDF document text
    • http://generaltubi.com/container/ckfiles/files/10722131554.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/a68ffe562f63e2b1537e76a6d3baf8d1/makobomazulum.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae0b0eb66d2---77844411257.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/d541e10841a5fa17aef3f4789074e8df/47978566139.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/3c879d18253eda96ac4f10e9b50505be/wozidekadovumofokat.pdfIn PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/dd4nc60v9jahjoa177qqd1e860/28216142395.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/n1k9tdsrcuojtaee8001vlpvn7/tiroropivupipus.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b58120ba29f---zapodilidudugefoxok.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093b7997aaf5---zusur.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7b336cf5a---43679271461.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d5b716df176---70325480261.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/75166535424.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/80017692401.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/fb79fe206b5210692c45d7161f27f31d/laxulufazex.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160bbecab0c981---mimigitaxatumadumela.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160876a22530b0---mivulewuzevubosorasivar.pdfIn PDF document text
    • http://autodilykanka.cz/cmsimple/images/file/fewokaguratiwexelilaj.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16079b81602e1c---tunosetupaxe.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/0c43bc2ac28d1a2506feb1a483eaa517/tifujevidisatuxejapiwumil.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/8bfd7c7720d82c3d7e61c99a369826b3/87684048146.pdfIn PDF document text
    • http://pc75.net/upfiles/file/1622482341.pdfIn PDF document text
    • http://artospace.com/pics/file/tirim.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1608202c32919d---tuzekafatibezal.pdfPDF link annotation
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=photosynthesis+reading+worksheetPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA0D 10772 bytes
SHA-256: e52e3ff33fa6fae0b4e54da26d0bbb55f94e86905cf90962164e158cf2958a49
font_01_sfnt_off0000e2b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B5 16496 bytes
SHA-256: ed3985b7d5cf6be86c8794c9fbc5e64bc5bdee2dbbf2bd4478aa1ceff7922041
font_02_sfnt_off00010ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.