Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68c368417545acd…

MALICIOUS

PDF

68.5 KB Created: 2020-12-25 20:25:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a9d6c87149e2d81f22200c91305e245e SHA-1: 4372391f516b30aa7b995b5eaa72e31f24eeafe2 SHA-256: d68c368417545acdeb522e7ba52118119ab0801b53ba17748006b53a05aa7850
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, with one primary malicious URL. This suggests the document is designed to redirect users to potentially malicious content or phishing sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffnew.ru/strik?utm_term=civil+war+generals+game PDF link annotation
    • https://morutasatosode.weebly.com/uploads/1/3/4/3/134366393/zusogojujepimet-tepula-maxemisupiko-ziredijawaj.pdfIn PDF document text
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/rudupanafo_leropuxoga.pdfIn PDF document text
    • https://pozuxopukemo.weebly.com/uploads/1/3/4/7/134705319/2aab225.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/MFUjbje/rotating_brave_switch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/de6e1950-5c4a-47a3-96fb-65e14b3f2e4f/afk_arena_enhance_your_gear.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/the_tyrant_falls_in_love_dubbed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e660092-164b-487c-9e0f-7d0d4d0d9cb9/warbirds_world_war_ii_combat_aviation.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/54085478548.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/71645530532.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8447c186-c7fd-4354-8ce0-4fdc7a91d4e9/zexajemododitazerukop.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/alternativas_al_neoliberalismo_en_america_latina.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_off0000ce63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE63 5060 bytes
SHA-256: 31db25959f5a786f08a387543117bdbe785f688ded259b667bd4422317d14cd1
font_01_sfnt_off0000df94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF94 11172 bytes
SHA-256: 6bf6eb33fce2d7a9240c47c2d1c1fb946e825536cccf75e8ef5bdece5069b894

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