Malicious PDF — malware analysis report

Static analysis result for SHA-256 07daa0533a916d8c…

MALICIOUS

PDF

79.1 KB Created: 2021-10-03 17:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 033e75bb9a70319356c81bc0f3b1e579 SHA-1: 6d005310ac96dd81215e0cc410324f4c45bd3b3e SHA-256: 07daa0533a916d8c167d4072ef4faaed24a26759d25c31b4e5d225b8195b4955
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed for malicious redirection. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a downloader or phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

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 http://buddhavehicle.com/userfiles/file/mokekanipapapuzere.pdf In PDF document text
    • http://prosquash.by/data/wures.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/146297a687c251f2a486d16d2836c2d6/sanaxikawibotixedapuget.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/16155c6599c0fb---kadijebikumibom.pdfIn PDF document text
    • http://helderlive.nl/ckfinder/userfiles/files/86772233151.pdfIn PDF document text
    • http://namadagaskare.ru/ckfinder/userfiles/files/65033757350.pdfIn PDF document text
    • http://skncn.com/u/files/lapurawinorikunur.pdfIn PDF document text
    • https://projetovm.com/uploads/files/dosipiboru.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147207fc0e5d---73663663437.pdfIn PDF document text
    • http://fli.edu.mn/ckfinder/userfiles/files/72531383119.pdfIn PDF document text
    • http://cerescommoditiesltd.com/Images_upload/files/55534160114.pdfIn PDF document text
    • http://vladjurnalist.ru/archive/file/64824244556.pdfIn PDF document text
    • https://swaarm.de/app/webroot/upload/files/32598319840.pdfIn PDF document text
    • https://eminentland.com/admin/userfiles/files/jelamupazepujas.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/161342c05be38e---66036928409.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/1cdbd775d3ab080b023f1343e80fca90/73057160437.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/69950fa9fe4020d2cb74aa8f34c4f0ce/vajajaburorofumuwug.pdfIn PDF document text
    • http://dc-07b6a75bc4d0.breakthrough-physical-therapy.com/userfiles/files/lupavaxi.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/nefagowuwulizeki.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614e32a38a304---40024742275.pdfIn PDF document text
    • http://innotack.com/userfiles/files/fifutukaxafazow.pdfIn PDF document text
    • http://pwmtqatar.net/userfiles/file/tapezetadifejarubiton.pdfIn PDF document text
    • https://jv-cms.crazy-jessie.nl/uploads/files/momik.pdfIn PDF document text
    • http://jjkxmy.com/upload/files/202109192052269207.pdfIn PDF document text
    • https://aademvegabaja.org/images/image/41427261140.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=can+i+go+into+labour+without+my+waters+breakingPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB618 18792 bytes
SHA-256: 199f1b8ac3879df2a2af1d9ac6a26c3591421455dd3bedf6474318cda1750959
font_01_sfnt_off0000e626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE626 11120 bytes
SHA-256: a286c7675152a79630b2855910da77b5a0b16ba6de354716474e40ce9a586514
font_02_sfnt_off00010005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10005 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00011816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11816 16232 bytes
SHA-256: 01cd0e4798e93fb086042d610f43ddeed7bf091af48aa863f5c4a4f61b651684

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