Malicious PDF — malware analysis report

Static analysis result for SHA-256 78779ebf613ce71e…

MALICIOUS

PDF

88.3 KB Created: 2020-08-03 03:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd9d3e1551c672e9ae4605b009920dd9 SHA-1: 8de4a53fca0f37990b1c8a8a68ddfde93bc54544 SHA-256: 78779ebf613ce71ef2f9219d983826e2a7aa1c0015586c6652db18b5eb24c3cb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to redirector infrastructure like 'ttraff.com'. This indicates a likely attempt to direct users to malicious websites for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious.

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=drit+bike+games In PDF document text
    • http://files.faubionmiddleschool.com/uploads/1/3/0/8/130874143/5327c939cf367.pdfIn PDF document text
    • http://files.bethlehemchristianmission.com/uploads/1/3/0/7/130775320/d602756b33b.pdfIn PDF document text
    • http://files.trailffest.co.uk/uploads/1/3/1/3/131398419/ae7f5d26.pdfIn PDF document text
    • http://files.milespond.com/uploads/1/3/2/6/132681773/pikuvojozor.pdfIn PDF document text
    • http://files.westerhausmetals.com/uploads/1/3/2/6/132681293/bopabinopebasu.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/1/0436/2344/8736/files/kufulijazafumerasifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/google_maps_como_chegar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6352/5026/files/xuzagobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/megolevejedurafoxekeviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/23642951945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5704/4890/files/gesibesape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/58364924377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0428/0481/files/fobipekaridekira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/63355520109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/43478505361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7366/7225/files/sutavujox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6515/6508/files/rat_dissection_labeled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/85706819752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/66181132094.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_off00011fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB5 5176 bytes
SHA-256: 9bdbef441c34b898eda34497b8ec4d89703f122217c1c79224c460a05d1f41a3
font_01_sfnt_off00013144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13144 10192 bytes
SHA-256: 364cb5df94e7a9188d988ba6050a729c578a19d835e822e90bc4be06458c410d

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