Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7b909178fa1416…

MALICIOUS

PDF

67.2 KB Created: 2020-12-21 12:43:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 789d529bc3a00c22a3dbd84bfb5ad605 SHA-1: 8479610f01df4a67cd91a1d2069da41b46daf012 SHA-256: 2e7b909178fa1416d2b83fc1c8561e80fc4740305f563b0fcec7fcacca3d0f22
184 Risk Score

Malware Insights

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

The PDF contains embedded links, with one prominently pointing to a redirector URL associated with malicious activity. The document body, though heavily obfuscated, suggests a lure related to game hacks, aligning with phishing or malware distribution tactics. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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/strik?utm_term=city+racing+3d+lite+hack+mod+apk+download In PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/8488792.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464319/normal_5fdc929e28237.pdfIn PDF document text
    • https://tukobigerokigab.weebly.com/uploads/1/3/4/6/134653943/misalokujexekewazit.pdfIn PDF document text
    • https://defelewag.weebly.com/uploads/1/3/2/7/132741475/70acebdd85a.pdfIn PDF document text
    • https://sojetupeduxagi.weebly.com/uploads/1/3/1/8/131856567/9d7b5ac9f2fb9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467915/normal_5fc7ea0341860.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/36801545125.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1d6da17-6603-4e40-b69a-432d8e9ff909/wujikekedaxiwusizova.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49b39bd2-8390-4da7-9f82-b564de3bc9a6/nuzamuraxagorixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bba90e26-a9e2-4ce3-b5d8-98e253c71610/vitanugiwoxal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9833fab5-b17d-4d08-838c-1f081e726b49/gegafudevunow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a08747f-a2e8-40e8-bd19-c12093bd6bb7/watch_nba_live_streams_reddit_free.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_off0000c7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C1 5636 bytes
SHA-256: fa013ee694c7460a54d222ea55cea048f59d0e11a5fd8d6143c0824a764a868e
font_01_sfnt_off0000dad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD4 10820 bytes
SHA-256: 47ae8092a089045d6eb7a4fb47763b15005a1afaf2550b365b6d495d19e2cc92

Open this report in the interactive analyzer, or submit your own file for analysis.