Malicious PDF — malware analysis report

Static analysis result for SHA-256 46e62cdedb0ed1c4…

MALICIOUS

PDF

77.9 KB Created: 2021-04-07 02:28:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4014a54fa6c0b9b136ba13523599f3b SHA-1: b3ef6b693abe488f424653eeecc2547ada22b213 SHA-256: 46e62cdedb0ed1c45f551986ff048ce05e14f5624db2d258634456c58d5e71cf
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 serving as a lure for phishing. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to a malicious site, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/123?utm_term=search+engine+algorithms+pdf
    • https://cdn.sqhk.co/jogowijalaro/l7gh9ij/walerisunepu.pdf
    • https://cdn.sqhk.co/zisujidixa/ijbnmia/smash_champs_wikipedia.pdf
    • https://cdn-cms.f-static.net/uploads/4370072/normal_5fd1416ba2bba.pdf
    • https://cdn-cms.f-static.net/uploads/4471683/normal_5fd1831c3ff29.pdf
    • https://cdn.sqhk.co/letarezetap/glkiijh/37947139217.pdf
    • https://cdn.sqhk.co/saxamabewido/1br8haZ/92933589491.pdf
    • https://cdn.sqhk.co/pukikojat/dgdgirV/84010787723.pdf
    • https://cdn-cms.f-static.net/uploads/4456121/normal_5fe7bc9b1cbe8.pdf
    • https://cdn-cms.f-static.net/uploads/4406789/normal_603fda9f28d8f.pdf
    • https://cdn.sqhk.co/jubawiwa/ghu1jcM/potbelly_sandwich_shop_chicago_il_60606.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/074fa9f8-d678-4d94-994d-ca8f5836d8d8/25613430277.pdf
    • https://uploads.strikinglycdn.com/files/d46a0c19-d919-4d2f-aec7-76fe2c67c1ab/how_to_read_jung.pdf
    • http://kanisal.epizy.com/bipejujo.pdf
    • http://nesitobika.rf.gd/a4_label_template_4_per_sheet_portrait.pdf
    • https://s3.amazonaws.com/lonozote/50869445546.pdf
    • http://fukevitadej.epizy.com/83215575174.pdf
    • https://s3.amazonaws.com/xuxifuzituwu/91865868758.pdf
    • https://uploads.strikinglycdn.com/files/62f4902c-2a53-49c3-a751-45da49c4dc86/the_devil_wears_prada_movie_review.pdf
    • https://s3.amazonaws.com/tanapilamaxi/korean_alphabet_hangul_a-z.pdf
    • https://uploads.strikinglycdn.com/files/feed6061-3ac4-43e8-bed9-27e58d2c564c/can_you_use_two_double_rent_cards_monopoly_deal.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_off0000f2cb.bin
7f9e12cb1a3d627bde42e9a2674b606e28a10c5655849ca499603eaa0f219257
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CB 5672 bytes
font_01_sfnt_off000105f1.bin
01ebbda52655ecb47367daf656adb327f8da829277d04b070b4f9ac1076446bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x105F1 10772 bytes