Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcf22b0605abaf1f…

MALICIOUS

PDF

78.0 KB Created: 2021-03-20 11:17:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58b1ac9c6d8cd0509be31a9623b98462 SHA-1: 75949aecfb0b15db6cb86f748a7f296589d66131 SHA-256: bcf22b0605abaf1f3a22ad632a85a1c2034a3d8cd394f4d25c805f14500f7ed7
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely intended for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/wix?keyword=girlish+love+revolution+ds+rom
    • https://xotufidew.weebly.com/uploads/1/3/1/8/131856134/sefalipikabav.pdf
    • https://fekodajitor.weebly.com/uploads/1/3/0/8/130874258/8084176.pdf
    • http://fidofawi.medianewsonline.com/hoe_beveiligde_bewerken.pdf
    • https://cdn-cms.f-static.net/uploads/4456420/normal_604cde51c0d2b.pdf
    • https://cdn-cms.f-static.net/uploads/4425533/normal_600afeb0a189a.pdf
    • https://cdn-cms.f-static.net/uploads/4367964/normal_602515f58e6ef.pdf
    • https://cdn-cms.f-static.net/uploads/4474977/normal_604d8ce59f689.pdf
    • http://xolokeminapi.getenjoyment.net/should_google_chrome_have_full_access_to_my_account.pdf
    • https://cdn-cms.f-static.net/uploads/4416144/normal_60128bd039c4d.pdf
    • http://xogavuw.medianewsonline.com/jadeb.pdf
    • https://kasutuwisuruja.weebly.com/uploads/1/3/1/8/131872017/67e6b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jeduzizonox/xisopujotuneferikapepon.pdf
    • https://uploads.strikinglycdn.com/files/8e1d4539-6c80-4185-bc47-b528a088e552/diono_radian_3r_latch_installation.pdf
    • http://vorisenunajix.myartsonline.com/cascade_control.pdf
    • https://s3.amazonaws.com/pazatuv/video_bastian_steel_aku_rindu.pdf
    • https://s3.amazonaws.com/garorowa/feledozu.pdf
    • https://uploads.strikinglycdn.com/files/0ceba0dc-717d-41bb-97c0-17ebbcc0d452/vurugipagudadibif.pdf
    • https://uploads.strikinglycdn.com/files/d0d6fac8-f32a-4324-a4d8-cc1213320eb1/ncert_solutions_for_class_9_physics_chapter_11_work_and_energy.pdf
    • https://uploads.strikinglycdn.com/files/fe528564-02d4-45d4-aba8-8693d52c203e/58799391279.pdf
    • https://s3.amazonaws.com/remavuj/88761987549.pdf
    • https://uploads.strikinglycdn.com/files/01891e55-3439-4806-b2bf-9bb6cc59eb87/tofisozajizoloveno.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d52a.bin
84b73f2b20c9bc4817ee0f6fe75ae94d0a08fa9ce02bf14ac92d8a0778e47e44		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD52A 5100 bytes
font_01_sfnt_off0000e714.bin
e499d44b4fc2f04c2176f93fd4d37bf3a3d03f6cb63d122eb95b5048b6bfe99c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE714 4828 bytes
font_02_sfnt_off0000f758.bin
d113b758c5f8614f56d8ec07bbe5b3773d07180ecc8dff89ed2a21db796dc919		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF758 11040 bytes
font_03_sfnt_off00011bff.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BFF 4324 bytes

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