Malicious PDF — malware analysis report

Static analysis result for SHA-256 744ca74e9dbe2ee3…

MALICIOUS

PDF

95.6 KB Created: 2020-08-08 12:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0f6b9189e81f179329d0eeb68731dccd SHA-1: 1ecdd0473bc4a73b6de7471eb235fe2b25f263b5 SHA-256: 744ca74e9dbe2ee3c5ede19aad28facd07f218331dcd8953dac55779a7d07eb0
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create an SEO farm, directing users to a redirector URL (https://ttraff.com/pify?keyword=astm+a572+pdf+free). This redirector likely serves malicious content, masquerading as a free download. The ML classifier strongly indicates maliciousness, and the presence of many external links points towards a phishing or content-serving scheme.

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=astm+a572+pdf+free In PDF document text
    • http://files.seanlynchbooks.com/uploads/1/3/0/7/130775567/lagosufuxiwasif.pdfIn PDF document text
    • http://files.sldreads.com/uploads/1/3/1/3/131398406/bawetunoretunu-zajavukonaz-fusuzaro-vuvevi.pdfIn PDF document text
    • http://files.bottlealleytheatre.com/uploads/1/3/2/6/132682607/junowufetawilamana.pdfIn PDF document text
    • http://pekajaxeb.countryhealthworks.ca/uploads/1/3/0/7/130775934/60cee8d6.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/1/0433/7077/4693/files/kobujelewezezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/xidurubarewezebokomor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/wazuwolixogimedipodonawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5955/8053/files/fixepavesirifukipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0735/0696/files/moliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4346/1032/files/bokezabogafotumiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/0254/7611/files/cancer_de_seno_fisiopatologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7919/7081/files/45244004298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/mutum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1285/6731/files/moderncraft_texture_pack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6616/2341/files/magus_pathfinder_guide.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_off00012f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F15 5480 bytes
SHA-256: 024701c7f239e56aaae0d8992bca1f52d053847714cf98b0c471925690e7b3a8
font_01_sfnt_off000141b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141B6 15484 bytes
SHA-256: c035a691b6c6a561a5b65193689dc6aac59910c047238ffbf2004c9bef4ada4e

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