Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a6220cafd050a7f…

MALICIOUS

PDF

57.3 KB Created: 2020-08-04 01:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 68a9a5fbab1a0ebb85b85bfd6a7405af SHA-1: 217221e8e014ece0e05db232f71d3499436ebbc7 SHA-256: 4a6220cafd050a7ff6eed9b22dc6dfaf9285e62bc855d798d3f782067604f5c9
194 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, masquerading as an invoice or accounting document. It embeds numerous external links, with a primary malicious URL identified as 'https://ttraff.cc/pify?keyword=bookkeeping+accounting+pdf'. This URL is likely used to redirect the user to a malicious site or download further payloads. The document body, though heavily obfuscated, also contains references to this URL and other PDF links hosted on Shopify and custom domains.

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.cc/pify?keyword=bookkeeping+accounting+pdf In PDF document text
    • http://files.wearemindmade.com/uploads/1/3/1/4/131437980/bd068bf9.pdfIn PDF document text
    • http://files.magnumconcretecorp.com/uploads/1/3/1/3/131398036/zadujimozuzegasodon.pdfIn PDF document text
    • http://files.destyinvestments.com/uploads/1/3/0/8/130813988/2592321.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/1/0430/5174/5442/files/66466524047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/bavefigig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/bivipatedoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/gadobilabejufefovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7819/6129/files/filew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6957/1233/files/goxuzibegilukabumapexer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3228/9175/files/84455334497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/pitadatukoxixokotonemofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8402/7806/files/50111562747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0872/1049/files/jiwezebovem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5035/3318/files/lotorotimelen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/kojudo.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 8

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_off0000a3b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3B3 5128 bytes
SHA-256: 86145a3ddc427afcc80c883b4ca63264146aa96983b23a2d8bb62312421e9e35
font_01_sfnt_off0000b54d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB54D 10276 bytes
SHA-256: 7e3f1dc5e5f3d79fda3ed8c6e7b086a111da0a0acadd93515ac73e5b702a97ba

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