Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c5acf4e19cddf28…

MALICIOUS

PDF

33.8 KB Created: 2020-07-31 21:37:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b409ff8d45501f8210b129b4d1011bc0 SHA-1: 9433d21df0b40bbf8a131de7f3c6ec84edcb3fa2 SHA-256: 5c5acf4e19cddf28f38019bd8741b0f9d947cb14b3126c9e1253e9e4a1ef1fed
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, including a primary redirector at 'https://ttraff.com/pify?keyword=circuits+ulaby+pdf'. This redirector is flagged as malicious and is likely used to funnel victims to a phishing page or a malware download. The document body, though heavily obfuscated, contains references to this redirector and other Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to attract clicks. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly indicate a malicious intent.

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=circuits+ulaby+pdf In PDF document text
    • http://files.golden-meadowlark.com/uploads/1/3/1/4/131408899/gesaxava_vazamowaxarexu_bazozatevag_gimusipebopufo.pdfIn PDF document text
    • http://files.letrim.com/uploads/1/3/1/4/131437233/zepovifete.pdfIn PDF document text
    • http://files.charlesinfurna.com/uploads/1/3/1/8/131856134/23583.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/1/0434/9159/0308/files/28840961749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/dosirapujavegojakugixiboj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/65776994703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0492/files/jesasoruf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/dugitubimaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6829/1227/files/62991373600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8699/3816/files/galufezepotuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7556/7777/files/83239981014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78394199391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9862/7495/files/52489643853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/387060795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8691/3431/files/nibizonanejazirude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/forin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/kutolidavikegavawisoji.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_off000048c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48C3 5296 bytes
SHA-256: 92ca41873b508c760c364cb783a8521e69ae65177b0d3590eb00cce7d7f8a78c
font_01_sfnt_off00005ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD6 9296 bytes
SHA-256: f4c8d93fc236492618eaec7ff0d71b00769a5f646bf7927d1f8cc01c0baf4b81

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