Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fe66d2f43925a9…

MALICIOUS

PDF

41.6 KB Created: 2020-08-07 12:46:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e194bd7d3ffef02e163409844e0e55a SHA-1: 7919727d7a0c5b13aefcbfed1f0322c9ce55cb91 SHA-256: a4fe66d2f43925a99c2ba0a05edcc1947a7f6e4b2bf99c99e5b81be6c12a1afe
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a legitimate document. It also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to obscure the true malicious destination. The primary malicious link is https://ttraff.com/pify?keyword=assessment+for+learning+tools+pdf.

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=assessment+for+learning+tools+pdf In PDF document text
    • http://files.sarahsiegler.com/uploads/1/3/1/4/131454034/8f16051.pdfIn PDF document text
    • http://files.btfgcbh.net/uploads/1/3/1/4/131454024/6561954.pdfIn PDF document text
    • http://files.pestcontrolbrampton.org/uploads/1/3/1/3/131378899/sukal.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/1/0430/5158/1591/files/faa_aviation_weather_services.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/42770803386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/lodikolasaboxala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8044/0215/files/8317982217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/16686744619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3607/2341/files/xevogakafirifemuwiwoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8951/7973/files/61692456409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/5927/7987/files/arifureta_novela_web.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0363/3051/files/nomigivideja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3556/5978/files/jabubome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1995/9463/files/fatboss_trial_of_valor.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 5

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_off00006352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6352 5348 bytes
SHA-256: 178c46bb82652123f184346a9600178cf1201ea78967224c400f26dfcd848934
font_01_sfnt_off0000756a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x756A 10628 bytes
SHA-256: 54fe87e29e5951df690c233fee577d0a3646685f7dee174595aff846590e63e2

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