Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9bc501e41c522a3…

MALICIOUS

PDF

41.3 KB Created: 2020-08-25 23:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0ed66689012249142b49d7967b99461 SHA-1: bb0912670c181930a69bf1f33fa4fd9f0119c909 SHA-256: b9bc501e41c522a395ab6756dac51c1eb47e0563d565abc005b06fdd90e35eff
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. This URL is embedded within the document body and also appears in the list of extracted URLs. The document also exhibits characteristics of a link farm, with numerous embedded links, many of which point to Shopify domains hosting other PDFs. The primary malicious link redirects to 'https://ttraff.cc/pify?keyword=the+best+type+of+exercise', indicating a likely phishing or malware distribution attempt.

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=the+best+type+of+exercise In PDF document text
    • http://files.stgscentreleeds.co.uk/uploads/1/3/0/8/130874038/gawutalaremixopelon.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/1/0430/7098/0245/files/44043837480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/wesov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/adobe_after_effects_free_trial_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/discord_embed_link_in_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuwotowomezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5543/8234/files/modele_attestation_d_hebergement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1068/files/mijuboxujazore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4665/files/achy_breaky_heart_ukulele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/91808827636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/tagafofopapovenelolixejun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4352/0666/files/76330337448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3685/8775/files/biblia_ilustrada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2348/2535/files/approaches_to_qualitative_research_in_mathematics_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/alexandre_o_grande_biografia.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_off000064f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F9 5120 bytes
SHA-256: b58d7f37a6fb5a6b588c4ffed162772f29b58e6b5f8c8856d83caf60e2b19e47
font_01_sfnt_off0000766e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x766E 10024 bytes
SHA-256: 5bd1ff83057d527f7e706244e4c7243a7460c19027e7c7ea1755d1a1f7a57b68

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