Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a343550dc5cfcd6…

MALICIOUS

PDF

44.6 KB Created: 2020-08-14 05:59:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 317e49c6a64220645b94d8243fb2dc0b SHA-1: cf2ae01a0dcb3e8d33cf13b10dd9909400f8969d SHA-256: 8a343550dc5cfcd623a2595c459934696bbd2f42c08d32c726b9bb1e0a0be132
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying it as a link farm pointing to potentially malicious redirectors. One prominent link, 'https://ttraff.cc/pify?keyword=guidelines+for+infant+passport+photo', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the text 'Guidelines for infant passport photo' and urgency language, suggesting a lure to trick users into clicking the malicious links. The presence of a link farm and a malicious redirector indicates a clear intent to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=guidelines+for+infant+passport+photo In PDF document text
    • http://rukow.bodkacoffee.com/uploads/1/3/0/7/130738894/d7e7f07.pdfIn PDF document text
    • http://xejedibi.briteinitiative.org/uploads/1/3/2/8/132814930/8c23221dd.pdfIn PDF document text
    • http://files.ambitupstate.com/uploads/1/3/0/8/130813985/nadarig.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/1/0434/5308/7911/files/xolexemumet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/tozowunagezipux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2067/2409/files/korinuxobol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7448/6421/files/30426652348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4836/0343/files/definition_of_market_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7909/7758/files/98842857534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/engineering_drawing_book_by_venugopal_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0471/4404/files/62414358799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2784/6552/files/banjara_songs_dj_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/13056705107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/16499710195.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 7

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_off000070d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D1 5160 bytes
SHA-256: 1b600bebc5ae11617be9671f86577e5ea11115c2a22bfeec7b06bfd197bbd124
font_01_sfnt_off00008252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8252 10352 bytes
SHA-256: b0bb97cd15d9e2fe673ae5bda4c363810d0f8971b18616b313d2e662c5fdee37

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