Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25a2c96f48cd760…

MALICIOUS

PDF

45.4 KB Created: 2020-11-08 21:51:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c1ab9210c606fbfcb0f298973de6d2ba SHA-1: 16ff91c61bd970c1a90da8d117909ea05267f197 SHA-256: e25a2c96f48cd7604b98b6085a04dfc8ccba2575790d3f04444f76fe9ca235c0
232 Risk Score

Malware Insights

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

This PDF document is flagged as malicious due to its extensive use of external links, many pointing to disposable hosting, and a critical redirector link to 'traffking.ru'. The document body contains a mix of obfuscated text and URLs, suggesting an attempt to disguise malicious content. The presence of a download button lure and callback lure further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 8

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/123?keyword=tarjimani+rusul+qartuli In PDF document text
    • https://kuguzozivef.weebly.com/uploads/1/3/0/7/130739994/zevokimasisuvo-guvatevuroxe-paxerofaluwa-bijebubufovaz.pdfIn PDF document text
    • https://kefapadasogimok.weebly.com/uploads/1/3/4/6/134601884/4f67d9809.pdfIn PDF document text
    • https://jisasulozif.weebly.com/uploads/1/3/4/3/134371627/8479443.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://bopugixuja.files.wordpress.com/2020/11/gifinesawixedupe.pdfIn PDF document text
    • https://juvibix.files.wordpress.com/2020/11/wazasusegupaxusijip.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/20390967693.pdfIn PDF document text
    • https://vuvelowol.files.wordpress.com/2020/11/kuwolakejug.pdfIn PDF document text
    • https://womekunuda.files.wordpress.com/2020/11/44867644994.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55220bba-d849-4565-a23b-4dad17247640/applying_cultural_anthropology_9th_e.pdfIn PDF document text
    • https://wejogude.files.wordpress.com/2020/11/niwasegini.pdfIn PDF document text
    • https://nevosaxovib.files.wordpress.com/2020/11/vuvemi.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/wutebadifudutiwiru.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_off0000627a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627A 4636 bytes
SHA-256: 08942e353b742f6fd00950c759ea294ea6924d8ef816affda3cf2178d11013d2
font_01_sfnt_off0000720c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x720C 12652 bytes
SHA-256: a14686bae4f54fb719cb1f7c56c8293ce3bb7c2142709914819321dcdda949ba
font_02_sfnt_off00009b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B23 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361