Malicious PDF — malware analysis report

Static analysis result for SHA-256 3003c23eebbb7989…

MALICIOUS

PDF

55.6 KB Created: 2020-08-20 19:21:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f501d25dfaedd2cb2de73e98e8dc47a SHA-1: ecb07310d68215abac5658409f93d8b0c33f88c2 SHA-256: 3003c23eebbb7989805cc422c1e59f2350c2800c6db2c6f66cafa70bb31515b1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document exhibits characteristics of a link farm, embedding numerous external links. A critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=kopista+bartleby+pdf', suggesting an attempt to obscure the final malicious destination. The document body contains obfuscated text and multiple URLs, further supporting the attack pattern of a malicious redirector. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.com/pify?keyword=kopista+bartleby+pdf In PDF document text
    • http://xulupug.xn--cafer-dsa.dk/uploads/1/3/1/1/131164250/01fd329f307.pdfIn PDF document text
    • http://veruwajit.trinahoadleyphotography.com/uploads/1/3/0/7/130739775/gumojemewa_nobemedemim.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/1/0434/6078/8390/files/zisaxiwefubogatikepog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6192/6293/files/37883696180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/34783059557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2646/3385/files/55871286760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/2504/2329/files/oh_baby_girl_song_starmusiq.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9434/files/dion_waiters_injury_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7293/8399/files/tuvogakolujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9749/8535/files/selling_price_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9625/1304/files/86360683905.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF3 5244 bytes
SHA-256: bc0d42126206266a273cdd46d84af8e38f66740ee26fd578ebc5d55088fe17e9
font_01_sfnt_off0000add9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADD9 10556 bytes
SHA-256: b1dc75736afc3dd693570f5995963ec5e56a809d80fdb7f07a07ea75acff8a88

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