Malicious PDF — malware analysis report

Static analysis result for SHA-256 0adc2c11c5b72b30…

MALICIOUS

PDF

74.8 KB Created: 2021-01-03 09:19:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2d48f8d13cca62946f6fc394bc4d58b8 SHA-1: dd1b7f5806b03d7aa9a6a975e4562b793287f9ae SHA-256: 0adc2c11c5b72b305f74066e3ad5fea2c84c3103ba91b4de16c016337569f3f7
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/123?utm_term=puzzle+cube+project+summary'. ML classification also strongly indicates maliciousness. While no scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to lure the user to a compromised site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=puzzle+cube+project+summary In PDF document text
    • https://cdn.sqhk.co/jawutuwek/Yhiahe6/xokazefujerekina.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447460/normal_5fdae3c06cf07.pdfIn PDF document text
    • https://cdn.sqhk.co/jepipovi/hihhq3q/zombie_strike_war_3d_huntington.pdfIn PDF document text
    • https://cdn.sqhk.co/lulaxujik/iaishbh/24860968832.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496616/normal_5fc3e20059c7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465249/normal_5feec21557c2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389816/normal_5fc498484117b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378157/normal_5fd6251bc8b85.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/7194b78e-5aab-4d93-aeda-f96ca1bcf3a4/main_tera_hero_song_free_download_mp.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/15538584239.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0B 5176 bytes
SHA-256: 674f07c31f4c5021c23cac8451f9bad434430a49c3ea958c1c602b31d1f05152
font_01_sfnt_off0000edb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB6 10220 bytes
SHA-256: 393b9506a0cb603ca3e8dcba4b1c80ae0b3ad952cc4b275d5f431cacef2aa94c
font_02_sfnt_off000110c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C7 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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