Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a6af5c4c919a09c…

MALICIOUS

PDF

40.6 KB Created: 2020-08-15 07:49:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce242ae76a24a5556691de03969ac2fe SHA-1: 9fd1b904368206f21343b7e1c64135636a528e6e SHA-256: 3a6af5c4c919a09c67d162dd145741bd811216f13606c7ec0277ad322ab1c5dd
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'bass fishing guides' and includes the malicious URL, suggesting a lure. The presence of numerous external PDF links, many pointing to Shopify, further supports the SEO link farm tactic.

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=bass+fishing+guides+on+chickamauga+lake In PDF document text
    • http://zusox.vtfarmshow.com/uploads/1/3/0/8/130814328/2307159.pdfIn PDF document text
    • http://pegukufex.shopteambros.com/uploads/1/3/1/8/131857920/f3b183f69f9.pdfIn PDF document text
    • http://files.rusticdesignsflowerfarm.com/uploads/1/3/0/7/130775997/femojiwotefa.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/1/0434/2703/7336/files/chiari_malformation_caused_by_epidural.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/50463787110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7518/2485/files/13684727074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4535/4658/files/acet_application_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2684/0737/files/zejeroparikenotumebafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5542/4423/files/refuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/18159063048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/80040003883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8757/4678/files/julalabajekumativofimav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/u_satyanarayana_biochemistry_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/aula_internacional_1_libro_del_alumno_free_download.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_off00006163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6163 5452 bytes
SHA-256: 4a21bdabec4d1a353cb44cf3c8440f645a09d26a786a6eb3ef92f48dacb90a6d
font_01_sfnt_off000073bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BF 9928 bytes
SHA-256: 9e94b06e59cbfa59cd02c1db9e3a280f5872de47caf82be607fdea79f447ebef

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