Malicious PDF — malware analysis report

Static analysis result for SHA-256 b15c1c0a1645f987…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 22:37:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92c5b177eee8f8b3f00c69b42301cfcc SHA-1: 9312f20220b04e656c07a07cd772a287ff886c24 SHA-256: b15c1c0a1645f9870af5f4531cc7ea6679fbf32b226c6953e6c89aed51a85809
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, masquerading as a 'Gta online hangar guide', with the primary link directing to a known malicious redirector. The document body is heavily obfuscated but contains the primary malicious URL. The PDF structure indicates it was generated by wkhtmltopdf, a common tool for creating PDFs from web content, suggesting a web-based lure.

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.ru/pify?keyword=gta+online+hangar+guide In PDF document text
    • http://koledut.drjustingallantnd.com/uploads/1/3/2/6/132695366/tofimegod-gukusedan-tunabimuv.pdfIn PDF document text
    • http://wijux.raveyouth.org/uploads/1/3/1/4/131437940/folaxerezi_xeloxamakejukaw_wogugad.pdfIn PDF document text
    • http://files.yantraearth.com/uploads/1/3/1/8/131871569/2200351.pdfIn PDF document text
    • http://sutede.easecuritypatrol.com/uploads/1/3/1/3/131380429/jizewesetube.pdfIn PDF document text
    • http://govaka.zhugenyang.com/uploads/1/3/0/7/130739456/bemikudib-bexetugosuded-webum.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/1/0432/2436/7262/files/rumotoguvusirutebaguto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/dufemudixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/uterine_av_malformation_diagnosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8573/files/suxileda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1871/5289/files/mitexefezonipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7571/5743/files/pipokerud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/19092642384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1689/6159/files/pumevitoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7873/0403/files/7203493988.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 3

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_off00006627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6627 4940 bytes
SHA-256: e18a19219dbacaaf9dde35331f5dd53b65b46ed1c5f55e7a6510aac514f519fc
font_01_sfnt_off000076eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76EB 10868 bytes
SHA-256: 8d754ac310c55e1d34a5717df773d49e3d0222e605347ca89c63bbc8e89fbaf0

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