Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd80bf0e7ec17ae2…

MALICIOUS

PDF

79.5 KB Created: 2021-03-28 19:55:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69119eaccdc360767baf22d890087421 SHA-1: d25caa3fb603d5e94fa9b3a0f0473b7ceac9e361 SHA-256: bd80bf0e7ec17ae2dc3a751ecbc13a7cbb60af6d473a2944bbc534f636ec3173
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a lure to external malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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
  • 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://lozipotod.ru/aws?utm_term=streaming+under+the+dome+full+movie+sub+indo
    • http://linodogeb.scienceontheweb.net/encyclopedia_of_modern_bodybuilding_arnold_schwarzenegger.pdf
    • https://ginataxidorivez.weebly.com/uploads/1/3/4/0/134041929/9939448.pdf
    • http://wamipivifubape.sportsontheweb.net/xarudanuvubumajuvowama.pdf
    • https://lulofaki.weebly.com/uploads/1/3/1/4/131453598/805825.pdf
    • https://xogowabixebeva.weebly.com/uploads/1/3/4/6/134612916/ae9670.pdf
    • https://xokewetabido.weebly.com/uploads/1/3/1/8/131857041/zelomolodu-fugudi-vowufiwanufomel.pdf
    • https://daxeteven.weebly.com/uploads/1/3/2/8/132814811/wexoziwikemijovegu.pdf
    • https://lafotavesa.weebly.com/uploads/1/3/4/6/134633764/tuvafipasex.pdf
    • https://jetosiwer.weebly.com/uploads/1/3/4/7/134767378/vomizasogapip.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2fda5459-eff6-47cf-99c5-0ad47eb7cd1e/86163703568.pdf
    • https://uploads.strikinglycdn.com/files/e5f164de-9a15-43ed-b211-676ee76c08a6/how_do_i_put_my_samsung_dryer_in_diagnostic_mode.pdf
    • https://uploads.strikinglycdn.com/files/e0140183-1fbd-4041-9c07-e503821897af/harvesting_beetroot_uk.pdf
    • https://uploads.strikinglycdn.com/files/d5556684-176a-4ca7-a86d-98e701e090e7/98448961419.pdf
    • https://uploads.strikinglycdn.com/files/fce4476d-26da-45ad-96b2-bc1505909d89/gijafopimavalik.pdf
    • https://uploads.strikinglycdn.com/files/2bab08d9-007b-4b19-aa05-de3687194ce0/zekatavezamuwadixirerida.pdf
    • https://uploads.strikinglycdn.com/files/149c367b-7e2e-4990-adac-5aa806383db5/7047269123.pdf
    • https://uploads.strikinglycdn.com/files/ede40177-78f4-4ad6-8504-40361b9037be/practical_english_usage_swan.pdf
    • https://uploads.strikinglycdn.com/files/6064a3e6-6124-4c48-8201-557c5f9768b7/black_skin_white_masks_summary_chapter_7.pdf
    • https://uploads.strikinglycdn.com/files/63b87eee-b86b-4832-92ef-7771f5f8e9d8/medieval_2_total_war_stainless_steel_6.4_download.pdf
    • https://uploads.strikinglycdn.com/files/016095b2-707b-49b2-8618-fc4137158649/banubamod.pdf
    • https://uploads.strikinglycdn.com/files/2284c180-9dba-44d0-a51e-f511e997444f/45536657977.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_off0000f90e.bin
e89bec4478205c7d95010d05885da45b24d08388478d5183ccb314341d6190f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF90E 5624 bytes
font_01_sfnt_off00010c0a.bin
2bf30a1e779540176bf7adb0289b0f030ae8ac2b93e78b3215b6b6c1ca41ae34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C0A 10824 bytes

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