Malicious PDF — malware analysis report

Static analysis result for SHA-256 293223d6e097b783…

MALICIOUS

PDF

70.2 KB Created: 2021-03-22 08:23:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8721570bd98606c38ceb69980045c41a SHA-1: b97e5fd2be2a24be4b243dd1edcf03fa8691b3ef SHA-256: 293223d6e097b783f92ebe100d213f1589a7ef3ac72c7b0b7ac69c8ebfc3c9b9
104 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a suspicious domain, and ClamAV detection confirms it as a phishing trojan. The heuristic 'SE_URGENCY_LURE' suggests the document attempts to create a false sense of urgency to prompt user action. While no scripts were explicitly extracted, the PDF structure and external links indicate a phishing attempt designed to deliver a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://pelibifir.ru/award?keyword=accounting+basics+pdf+download
    • http://fakaripeti.xyz/17677559587hn3ch.pdf
    • https://cdn.sqhk.co/raxoxawupej/CkgcjeS/76305868462.pdf
    • https://zesojewati.weebly.com/uploads/1/3/4/4/134432656/294036a2e02.pdf
    • http://artrosil.xyz/68600918438mvr1f.pdf
    • https://cdn.sqhk.co/bitomasijelo/qhg9nha/9747442029.pdf
    • https://cdn-cms.f-static.net/uploads/4402718/normal_601465aa3ccab.pdf
    • https://xajobukemuxup.weebly.com/uploads/1/3/5/3/135398270/4728595c.pdf
    • https://bugajujifupub.weebly.com/uploads/1/3/4/8/134894919/213b68030.pdf
    • https://cdn-cms.f-static.net/uploads/4412570/normal_6018335710d68.pdf
    • http://airned.ru/guidelines_warfarin_dentalfp136.pdf
    • https://mezikemopirexat.weebly.com/uploads/1/3/5/9/135993778/8826573.pdf
    • https://static.s123-cdn-static.com/uploads/4420766/normal_5ff8d83ed5a8f.pdf
    • http://pimifawimonidij.mywebcommunity.org/amides_and_amines.pdf
    • https://lizakefamejoxen.weebly.com/uploads/1/3/1/3/131384135/rixil.pdf
    • https://static.s123-cdn-static.com/uploads/4383131/normal_5fc950a540d76.pdf
    • http://repaircreditscore.info/intermediate_algebra_for_college_students_7th_edition_answers6hxzw.pdf
    • https://static.s123-cdn-static.com/uploads/4419827/normal_5fdef2dde3d6d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xolevusafo.myartsonline.com/jomoxelevoka.pdf
    • http://xewabilema.epizy.com/pudelijixopa.pdf
    • http://wadoromutisagar.myartsonline.com/gukubulaxuxopasita.pdf
    • http://dunixojojulif.epizy.com/sizetozavanimuz.pdf
    • http://dadagax.epizy.com/fodaluwipulekejud.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d534.bin
a55a32df544d80d99fb3e9a905fe53ee95371ba686a4e752b07af17dddc0be63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD534 5448 bytes
font_01_sfnt_off0000e7e5.bin
3d17c9a83e21b8739a8daec6bcac22e195267109ddf8e47bf6114f8e65c566e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E5 10412 bytes

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