Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df396f4c4de46a3…

MALICIOUS

PDF

87.1 KB Created: 2021-03-20 05:30:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c52778af906c8e9afc39bec383b6adbe SHA-1: ee8ffa5243bdf43f68b86fb4e50bc6823b4e64d9 SHA-256: 7df396f4c4de46a30b41e1dc7e1c7e02a89f4800baca50acd93c28d6e2c563d3
196 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used in phishing or scam campaigns to redirect users to malicious websites. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests a scam involving lotteries or parcels, aiming to defraud users. While no scripts were explicitly extracted, the PDF structure and numerous embedded URLs indicate a malicious intent to lead the user to external resources, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://jacksth.ru/wix?keyword=eragon+map+path
    • http://movizopolu.medianewsonline.com/56111004174.pdf
    • https://nixetamusizag.weebly.com/uploads/1/3/0/7/130740210/3332e016c19df.pdf
    • https://static.s123-cdn-static.com/uploads/4369794/normal_6000c8ae0cce4.pdf
    • http://jepewadagamer.scienceontheweb.net/how_to_open_fisher_and_paykel_dishdrawer.pdf
    • https://cdn.sqhk.co/dodipenameki/ijrArhj/37538813345.pdf
    • https://cdn.sqhk.co/golemejexeno/hiciegi/sarema.pdf
    • https://cdn.sqhk.co/gabunufu/q43jQih/the_room_movie_2015_real_story.pdf
    • https://bolegabafewibe.weebly.com/uploads/1/3/4/6/134651697/vuximewekojopos.pdf
    • http://fuvesozufinefi.medianewsonline.com/najejuviregom.pdf
    • https://revotifolalowo.weebly.com/uploads/1/3/4/7/134716495/dumevewozepesako.pdf
    • https://togawikanow.weebly.com/uploads/1/3/5/3/135320583/7309846.pdf
    • https://cdn-cms.f-static.net/uploads/4468267/normal_6011e677280bf.pdf
    • https://cdn.sqhk.co/wixefawoz/rjdkthb/fokexupimowixapekibebepew.pdf
    • https://cdn.sqhk.co/fumamimed/ziijfSt/93682802640.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/80ea252e-1271-4a84-bfa2-42d5dba6f22f/software_developer_resume_sample_canada.pdf
    • https://uploads.strikinglycdn.com/files/3757c8eb-b45a-4080-bda6-6ea25616f45d/love_language_test_gary_chapman.pdf
    • http://bugenerefajujus.atwebpages.com/dofoduganu.pdf
    • http://bowegasobufur.myartsonline.com/authorship_of_the_book_of_daniel.pdf
    • https://uploads.strikinglycdn.com/files/6328f0f6-d083-440d-b014-db0df75f05f5/waxoxopozudezexavek.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_off000116b7.bin
0a8a69aee500e37e15a3bd40751a904527781c0675d54d8df31f9cdbe1077d9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116B7 4980 bytes
font_01_sfnt_off00012780.bin
cb196fc9dd776424edfb2bbd8d35935b7e968ece019760c56df8f905c491ec34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12780 12212 bytes

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