Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5b2fd1e1dde739e…

MALICIOUS

PDF

62.2 KB Created: 2020-08-22 16:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79cc1cdff32c7ebb3302d4cf7af5797a SHA-1: 9b4c839846d24ed5ce2953a5944d30b8df658654 SHA-256: a5b2fd1e1dde739e9ae03d9026e56c4b10346398b7edd1a9d49e74906717388c
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, likely intended to trick the user into visiting a harmful site. The document body, though heavily obfuscated, contains text related to 'Crusader kings 2 traits guide' and mentions wkhtmltopdf, suggesting a lure. The presence of a link farm heuristic further indicates malicious intent to distribute links.

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=crusader+kings+2+traits+guide In PDF document text
    • http://files.musicrocksyourworld.net/uploads/1/3/1/3/131379904/xojisetaru-dagojowekani-mibigokaguj-bizesabiwukes.pdfIn PDF document text
    • http://files.elliscme.org/uploads/1/3/2/7/132740362/kexawovowixivo.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/1/0437/4423/1575/files/storyline_elearning_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7314/files/82481334905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/binirebujisoralabas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/kumpulan_jurnal_akuntansi_keperilakuan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9227/1519/files/48593747073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/kefivaluxerazazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6364/0213/files/vertual_dj_7_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3679/3237/files/angular_reactive_form_valuechanges_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/joint_ownership_contract_templates.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 1

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_off0000b1b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1B1 5064 bytes
SHA-256: 3e40b1ac9b2c062461b976ea27d89d698cc97ea59e2db9bc83a04f7d3fa11af2
font_01_sfnt_off0000c2f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F9 12728 bytes
SHA-256: 8b8f487302cfce62d306fe17ac49b1ee3e903e75a432b41ec9cba2b0c6207570

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