Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dfa9a053e81e779…

MALICIOUS

PDF

69.9 KB Created: 2020-12-06 17:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: faece47db6786e7e792629ea5cfab779 SHA-1: 95dd3ed8f00407a6a58bdce7f578116d43f13f00 SHA-256: 5dfa9a053e81e779a50e691007ef0d040eabcca0320b8a34c79a7b70d88f158d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/aws?utm_term=undead+rogue+leveling+guide+vanilla PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368248/normal_5f8a2b39dfefe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404497/normal_5f9254acbab4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375204/normal_5f9118c480335.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384464/normal_5f9a8edb8e87f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379362/normal_5f960f54aac67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406777/normal_5fa778e85236c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491669/normal_5fc9beab99c3a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479905/normal_5fca9bb9877de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/78cf0c79-3e6f-478f-9c8d-6745dfafe309/set_associative_cache_calculator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4497b3e9-0d17-4d05-891f-13f1a657c4b2/cat_in_the_hat_full_movie_free_downl.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54a213398ff75154ad2d0/t/5fcadb941415195da079a8a1/1607130009461/xijajomodotumifezojo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2e8cb2bbd74065813b48b/t/5fc6c036efc65c5b7a2b9cf9/1606860854916/what_happened_to_game_pro_magazine.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0d3d2edfcd2bda938334/1606225213832/batevivewulakem.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc066c960f2895dc1e54813/t/5fcac9ac1e05c16d61c073e0/1607125420983/stick_zombie_arena_4_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfcf01491241adc45c706/1606221041107/livizeduzunipadakovirasi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4ecf2df132613bbd760b1/t/5fc9fbd752b5874c85957ff2/1607072741973/71750333192.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD664 4868 bytes
SHA-256: 3c9116c9e99542693fba518140eda2bacda50114ce116403f87868961391a527
font_01_sfnt_off0000e707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE707 10372 bytes
SHA-256: 90725a1fe57670fcd1317f98bb90c37e99bab16977e4fa4332ecadb4103903a1

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