Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcb42040647d835e…

MALICIOUS

PDF

46.3 KB Created: 2020-08-07 05:25:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d51c8aa2b881da883a1fa434cd4e61d4 SHA-1: d56f57b1ad63a65fbde7fbc6b45bf1b5edb75093 SHA-256: dcb42040647d835eb46da7a78fbf97837ef9c7baaaccb9055279433aa9c23d28
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious payload. The document body and embedded links suggest a link farm tactic, where numerous links are provided to potentially trick users into downloading further malware or visiting phishing sites. The ML classifier strongly supports the malicious nature of this 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=toyota+corolla+2020+manual+pdf In PDF document text
    • http://koxed.carolinascentscandlecompany.com/uploads/1/3/1/4/131438474/5401462.pdfIn PDF document text
    • http://files.newlifetucson.com/uploads/1/3/1/4/131483097/tewololux.pdfIn PDF document text
    • http://pumerake.abcpelican.org/uploads/1/3/1/6/131606407/8204813.pdfIn PDF document text
    • http://bovejerez.goldstatus-of-arts.com/uploads/1/3/1/6/131637316/kojafedavixulinu.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/1/0440/1856/5278/files/bhagavad_gita_in_telugu_with_meaning_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/sonusibut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/dakitirurowekeka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8871/files/61332202960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/2767984165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5013/9801/files/detafirugatimikosupasoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3331/3958/files/jefeviderosus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4885/2891/files/33545346938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1958/3133/files/boxulojimilunosipotejiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9585/4997/files/nise_control_systems_engineering_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/99562756973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9817/7693/files/electric_normal_pokemon.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 3

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_off0000694a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694A 5164 bytes
SHA-256: 3798f700bb82d1ba994bca6ffa2086b0998effeeea38bd22473c5e9ffb93808e
font_01_sfnt_off00007ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB7 10428 bytes
SHA-256: 574488ef9f2caa3fff7a0a79e9625144e3a59b59cc9448e06d4c137a8e676373
font_02_sfnt_off00009e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E39 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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