Malicious PDF — malware analysis report

Static analysis result for SHA-256 35d779ef37419ddc…

MALICIOUS

PDF

39.8 KB Created: 2020-08-24 04:16:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9f6f0fd2436ebf0bc48d6af91caf4d5 SHA-1: 83638ebaf6a58de7ad680ef6fece1bc1212f8511 SHA-256: 35d779ef37419ddcbef1b67435a5f830ccb19de7ddd49f76712b17e68420d6bb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a large number of embedded links, many of which are designed to appear as legitimate documents but ultimately lead to a malicious redirector at ttraff.com. The heuristic firings indicate that the PDF is acting as a link farm and redirects to known malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. The document body text, though partially corrupted, includes the malicious URL and suggests a lure related to a "World map coordinates worksheet".

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=world+map+coordinates+worksheet In PDF document text
    • http://sefar.zellabarket.com/uploads/1/3/1/3/131380005/3518767.pdfIn PDF document text
    • http://fawafizo.godfrey-lee.org/uploads/1/3/1/4/131407995/salutebemew-rufisutimararez-walibefeju.pdfIn PDF document text
    • http://files.mvcsc.net/uploads/1/3/0/7/130776592/gaduk_gegujupawaku_rowovakovol_buzetuwu.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/1/0449/5890/8584/files/european_guidelines_differentiated_thyroid_cancer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0008/5160/files/32162515281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4614/1093/files/welewoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/78690183885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1739/5611/files/sociology_book_class_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5542/3396/files/96848834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2163/7544/files/18207558229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6790/8004/files/vojojarofeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5655/4394/files/80360135170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5049/9222/files/barufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/seven_eleven_malaysia_annual_report.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_off00005d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D14 5480 bytes
SHA-256: f5e528b7e4bda2d1ec6fc60bed2750e536ebcdaf08e9d43b2aee3cfd659f235f
font_01_sfnt_off00006fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA4 10220 bytes
SHA-256: cb0e786ae7626d3c9f6ae8f3e1fc9312948e01257e922c529c0a23caa0e2df9e

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