Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e451ed07a5844e…

MALICIOUS

PDF

41.2 KB Created: 2020-10-04 22:17:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: c0a3ad2c9cb36453f33a96c839a95576 SHA-1: 61cddb086d07a06f4a285f5751e86a7d635f05d2 SHA-256: 08e451ed07a5844eb5fb4cf3e5be7980488247a883804f1b209cfcaccc4af02e
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically `https://gettraff.ru/strik?keyword=videoder+apk+download+para+pc`. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to download potentially unwanted software or malware. The presence of a large number of external PDF links further indicates a link farm used for SEO manipulation or to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/strik?keyword=videoder+apk+download+para+pc In PDF document text
    • https://site-1036684.mozfiles.com/files/1036684/97063394264.pdfIn PDF document text
    • https://site-1037900.mozfiles.com/files/1037900/bobodeduxosikolafo.pdfIn PDF document text
    • https://site-1037132.mozfiles.com/files/1037132/dopijidagozisexor.pdfIn PDF document text
    • http://files.statebirdtogo.com/uploads/1/3/2/7/132710687/a1b067.pdfIn PDF document text
    • http://files.carperfamilyband.com/uploads/1/3/1/3/131381919/mafesomafef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5663/9383/files/epic_theater_orlando.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5406/6583/files/chevrolet_trailblazer_ss_horsepower.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5324/3816/files/arizona_quit_claim_deed_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0081/8593/files/joxaniruwijafosetori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7273/6411/files/firudazitukavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/eternal_sailor_moon_powers.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_off000063dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DD 5012 bytes
SHA-256: dffe5770918b656f631a9468e879c3076c7e3ac2084bf9ac96a2b9aeac8ff8e2
font_01_sfnt_off00007512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7512 10316 bytes
SHA-256: a2e492ecb02fbae7cdacaa22af8d4dc78391c4be38b91cb8a7679ba8c24ee825

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