Malicious PDF — malware analysis report

Static analysis result for SHA-256 781234feafa1a178…

MALICIOUS

PDF

43.0 KB Created: 2020-08-23 07:33:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b10531612e46c91fe1ee263687d0028 SHA-1: 40bda1da451ff2e2179f525765f9a5ae68237efe SHA-256: 781234feafa1a178ada8a3fd3f6c35b7c280c25307630cb9c3c382b1c518420f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The primary redirector URL is https://ttraff.ru/pify?keyword=good+luck+chuck+full+movie+free, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, indicating an attempt to lure users to malicious content. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=good+luck+chuck+full+movie+free In PDF document text
    • http://files.tracyeducatorsassociation.org/uploads/1/3/1/4/131453934/4428832.pdfIn PDF document text
    • http://files.craigheadresearch.org/uploads/1/3/1/1/131163872/daea11.pdfIn PDF document text
    • http://files.christanglicanfellowship.org/uploads/1/3/1/4/131406082/nemekarinudi-pilija-rolizuxa.pdfIn PDF document text
    • http://bumumupag.savemartlascruces.com/uploads/1/3/1/8/131871721/2741918.pdfIn PDF document text
    • http://files.canwemummy.com/uploads/1/3/0/7/130740049/8432118.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/1/0428/9835/8432/files/doworefobose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40573574370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/71941437889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3692/6374/files/blender_2._8_modeling.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/89955413564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9181/2771/files/47333701747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/rebapedezed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/fao_evapotranspiration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6829/1227/files/3d_to_stl_converter_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18491093394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7305/2575/files/exceptional_c_style_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1978/6645/files/xomitegut.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_off000069fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69FE 5028 bytes
SHA-256: 144c7a1d954bcce4ce8804ca2e75c788424db573a3ce2ffc9f9934e1e8fac0f1
font_01_sfnt_off00007afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFA 10380 bytes
SHA-256: bd73064647b713b5cf03d32279c0212a514bd140e4fc2c762276f2f6c9d29397

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