Malicious PDF — malware analysis report

Static analysis result for SHA-256 11789cb708719d2a…

MALICIOUS

PDF

41.9 KB Created: 2020-08-22 10:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 48ad589841a072e716b9dacc0a559907 SHA-1: 5911c49977d0b18699b4e08daa837b5249b89663 SHA-256: 11789cb708719d2ac74388edddfe424b01de0558bdaec5e3c5bc6548ff262e74
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). This suggests an attempt to direct users to malicious content or phishing pages. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.cc/pify?keyword=anime+icon++free In PDF document text
    • http://files.thurstoncountyrw.org/uploads/1/3/0/7/130738859/8936380.pdfIn PDF document text
    • http://somet.utahyouthcourts.com/uploads/1/3/2/3/132303354/jurimagilivom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7086/4025/files/ninupegot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/arthur_jafa_my_black_death.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9481/7445/files/60047747593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9934/9407/files/nai_tl_scintillation_detector.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/zulamokamafilivez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7511/6961/files/falujidabafagobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3735/0293/files/29026192620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2516/2652/files/9965700879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3974/0319/files/blow_up_mattress_target.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/tulopabisijojirokeruw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/adblock_browser_for_android_apkpure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6119/9526/files/dagujiju.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B21 4304 bytes
SHA-256: 3f3690cd6f3a67dde5fce433efe04d035ac4f06121c8401e431cd15646b85156
font_01_sfnt_off00006985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6985 10400 bytes
SHA-256: f6653b09f4ce56f429c3bca26dab3a5ec4ae5a8dd4b25b0f4ee9ab7caceca350
font_02_sfnt_off00008d24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D24 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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