Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be90057387481ec…

MALICIOUS

PDF

98.8 KB Created: 2021-08-04 06:10:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 27a9528240bc7d3eb6502591b524b827 SHA-1: 1319a2011806c90bcfa9a50e50e31b6a7bafeacc SHA-256: 1be90057387481ec644f5c5e468d9cd9a466ab4766f2717d0832ad2ca2516567
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains a link farm pointing to numerous compromised WordPress sites, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect users to malicious content, likely involving JavaScript execution within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pixomot.ru/uplcv?utm_term=how+to+adjust+clock+hands+on+g+shock+ga+110 PDF link annotation
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b7ca274a59b---57861088635.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/54dfcf8df6871c9344b5bb032e4d8217/mujuvoniluwuzigakuze.pdfIn PDF document text
    • http://weddingdiy.cc/uploadfiles/files/20210601_181328_4633.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160835e7c3450e---3872489178.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/mel0fi5d8pl5qmbjrc7gdjrk90/59829934914.pdfIn PDF document text
    • https://laptopserwis.com/app/webroot/media/files/logotimakar.pdfIn PDF document text
    • http://champaigncursillo.com/userfiles/file/moginutinop.pdfIn PDF document text
    • http://beautifulmoda.com/userfiles/files/genavetoti.pdfIn PDF document text
    • http://timandlor.com/userfiles/file/76171645186.pdfIn PDF document text
    • http://americandeliorder.com/uploads/files/49632668547.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/h8hijvfui48j2pep8dd2ofues1/zoxipowabenanajoxevejovud.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160af93ae02b4b---78313194836.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c85392e474d---dowuzav.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/q8tbq21dcmhpa8nlubke6qfef8/diwulekawuvupop.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a8ba6f8a9---jizudizujogoguzazavosujim.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7e64bdbf12---33323372504.pdfIn PDF document text
    • http://kuhomania.ru/ckfinder/userfiles/files/80515240546.pdfIn PDF document text
    • http://alnadaoil.com/userfiles/file/69223510363.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/file/latididofefasuvufilefale.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/14983644254.pdfIn PDF document text
    • https://familienbilstrup.dk/userfiles/file/90914528029.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606eee1333227---pakepubibakufawi.pdfIn PDF document text
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEA 20228 bytes
SHA-256: 322eb48bff744db123c82de09608ef972b37d4c39d7d975c2d92cbfa83820237
font_01_sfnt_off0001344a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1344A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014c61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C61 10896 bytes
SHA-256: 479a8ebd3cb93a749de00a32fa48f03b60e7ea82de6f394419ca5caf9366edc7
font_03_sfnt_off00016573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16573 16076 bytes
SHA-256: 0491ab1f9781984131449868ed95f15036bddabad70a51597ae233fa8bdf08d0

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