Malicious PDF — malware analysis report

Static analysis result for SHA-256 874d42d316670b3c…

MALICIOUS

PDF

36.2 KB Created: 2020-08-11 14:51:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4bdb1d108d958eb1c2e54a9e9f477af0 SHA-1: 14ae3fb02ccf61a18cae57292065cdd50714d991 SHA-256: 874d42d316670b3c12be53dfbbc6ee248de606815e6242a4d5ed38601041fa1a
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service that is associated with malicious activity. The primary redirector URL is https://ttraff.com/pify?keyword=data+analysis+in+stata+pdf, which is designed to lure users into downloading further malicious content. The document's structure and the presence of many external links suggest a link farm or SEO poisoning tactic to distribute malware.

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=data+analysis+in+stata+pdf In PDF document text
    • http://files.fbccrescentcity.org/uploads/1/3/1/6/131606605/6dc36d9.pdfIn PDF document text
    • http://files.liberato.us/uploads/1/3/1/4/131412290/9a6944c.pdfIn PDF document text
    • http://davoko.h2020-tutorial.net/uploads/1/3/1/4/131407406/ronupe.pdfIn PDF document text
    • http://deguna.sewitschorke.com/uploads/1/3/1/3/131380485/fofoto.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/1/0430/9218/1145/files/98519681864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/pc_jain_paleontology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9429/3142/files/2085346450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/86867740892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9418/7933/files/48622844574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/tabupazelefakutude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/27188364091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/74251612053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/metastase_ossea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6179/6248/files/sasutenilak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9592/5671/files/80762771810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5032/0540/files/boschveld_chickens.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/kusovozafajexemow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3170/8316/files/95185519669.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 4

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_off000050f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50F2 5040 bytes
SHA-256: b4ade349a8ff73568bb74ac4f5564b016d94d70928086a3ea692b83864bc3310
font_01_sfnt_off00006239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6239 9860 bytes
SHA-256: ec6992cc3b093d0c588b5b57ae5813833426206cc84b6a83d82d6092f3f9b0d1

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