Malicious PDF — malware analysis report

Static analysis result for SHA-256 6200688b0904b8a1…

MALICIOUS

PDF

68.1 KB Created: 2020-12-20 00:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c697d48196202c6f5986ddd3c7d1dd7b SHA-1: d007c89ec03e6bd2b60a01daf6024df6e56fc24c SHA-256: 6200688b0904b8a1b79b97042d14b3586d3b0cbfa31aa75dbf09af7d9ed4bd18
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://gettraff.ru/123?utm_term=dragon+city+mod+apk+techylist`. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. ClamAV also detected this file as `Pdf.Phishing.Trojan-d2528dad23a95d95-10044376-0`. The combination of these factors strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/123?utm_term=dragon+city+mod+apk+techylist
    • https://sobopagugakevul.weebly.com/uploads/1/3/4/8/134881985/7836548.pdf
    • https://zojopufowe.weebly.com/uploads/1/3/4/5/134523349/rugubonoluxob.pdf
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/rejorejugovav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc5a455085bf90c0e1d6cd6/t/5fc9ae5841142a3c4b3b611e/1607052891999/91613031416.pdf
    • https://s3.amazonaws.com/winumigutam/65810427679.pdf
    • https://static1.squarespace.com/static/5fc553139698b02c7f3e0be9/t/5fd1d620d97b572b89db8745/1607587360611/galaxy_attack_alien_shooter_tips.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf3a38bc8713fe6fcd840/1606218659385/as_seen_on_tv_pillow_side_sleeper.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5e065147b148042ad212/1606376966823/cid_sony_tv.pdf
    • https://uploads.strikinglycdn.com/files/3540e3c7-014a-48fa-97a1-be170b52f2b9/sims_4_key_code_generator.pdf
    • https://uploads.strikinglycdn.com/files/9022a0a0-51cf-4d54-b006-58ded5de3fc9/galaxy_j3_reviews.pdf
    • https://static1.squarespace.com/static/5fc66c783dfdd95b60faf88d/t/5fcf7cfa7cc0b10a0ad334c3/1607433467462/wetojatagoxi.pdf
    • https://static1.squarespace.com/static/5fdd5508eb685147a09c9c9e/t/5fde79aff5f6422656490489/1608415665113/sagibubepodifinav.pdf
    • https://static1.squarespace.com/static/5fc36151a13a450bab040bac/t/5fc5ebac173fb5383b6ff107/1606806446136/36978900270.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_off0000cc91.bin
dc30bf91ed6ed6132d1c8b0de87486f430f83c27390e5c6af8beb09668f4460f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC91 5652 bytes
font_01_sfnt_off0000dfb2.bin
da8e6f5e6d1f6c1995bef13af1a5f22376653b121ef22865d956d6378856561c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB2 10604 bytes

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