Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ff031db937784a…

MALICIOUS

PDF

53.1 KB Created: 2020-08-08 03:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c3f848fad91e7aa74897f6b944ef738 SHA-1: 1ade9b48f3a3cb05b495aac421d6d60748ba17d3 SHA-256: 93ff031db937784adc278848c3378cd38b734cc86173035829262429287012be
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the primary links points to a known malicious redirector, ttraff.com, which is designed to obscure the ultimate destination. The document body, though partially corrupted, suggests a lure related to 'auxiliary verb list with examples pdf', likely to attract unsuspecting users.

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=auxiliary+verb+list+with+examples+pdf In PDF document text
    • http://files.aircombatbattlefield.com/uploads/1/3/1/1/131164129/3478183.pdfIn PDF document text
    • http://files.pilgrimlutheranfreedom.com/uploads/1/3/0/7/130775735/6988908.pdfIn PDF document text
    • http://gegaveji.haywardfitnessfanatics.com/uploads/1/3/1/4/131454106/jopagodekavonefe.pdfIn PDF document text
    • http://xukelibo.awallacemarketing.com/uploads/1/3/1/4/131452883/604e6.pdfIn PDF document text
    • http://files.cafezippy.com/uploads/1/3/1/3/131398224/vipoj.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/1/0440/1247/0422/files/learning_management_system_proposal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/vejisojumow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/anderson_bridge_experiment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/rebanikalomenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5511/files/67203937559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/kegamagijabexoreti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0062/6341/files/97427954072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wajomuxufukurojudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3513/0018/files/31832605619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/58539530034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8886/2614/files/gekotalunogorefopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9503/7854/files/7644818650.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_off0000899e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x899E 5732 bytes
SHA-256: 7882ff74850b0e9c4d33ac02728d60aa7f7c0e20d4fa14e9594fb0983d0e7087
font_01_sfnt_off00009d0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0A 12948 bytes
SHA-256: 3153370aa2a33ca8eea19314317a8c2c216b013f67d831825e1635e08344f836

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