Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c8ebbe1a51e2f36…

MALICIOUS

PDF

45.3 KB Created: 2020-08-23 02:54:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6bd6448bb169a2758d0073a846162cad SHA-1: e9be51946ff028f3d1e7942874c79168736cd65e SHA-256: 7c8ebbe1a51e2f36ac31710006cbf812bffa5aeff0f05975b43db94ea05f2ffb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body, though obfuscated, contains the same redirector URL, suggesting a phishing or scam lure. The ML classifier strongly indicated maliciousness, and the presence of a link farm heuristic further supports a malicious intent to drive traffic to potentially harmful sites.

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.cc/pify?keyword=tratamiento+parestesia+pdf In PDF document text
    • http://dubakir.sabrinaeiraphotography.com/uploads/1/3/1/3/131383483/noxegibogi.pdfIn PDF document text
    • http://files.simonfischeronline.com/uploads/1/3/0/8/130813630/585d17.pdfIn PDF document text
    • http://files.gabrielagamez.com/uploads/1/3/1/4/131453268/9806109.pdfIn PDF document text
    • http://poborekor.hackenthorpelodge.org/uploads/1/3/2/3/132302936/pexawupos_lemejulabulako_zugosedexog_zapodederov.pdfIn PDF document text
    • http://jifudi.tlc-nanbpwc.org/uploads/1/3/1/4/131437252/2df1bdd0d8de9.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/1/0440/7522/1144/files/64471917018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3986/6270/files/46606992234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4314/1285/files/xubusiwazilamibul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1102/9667/files/xenelusupala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5676/6869/files/buwisiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5438/3782/files/66295230171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4031/6311/files/lijikumexav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9842/2934/files/82006724275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/97516234689.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_off00007241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7241 5104 bytes
SHA-256: 0e0028b95aad04dd5781f69cf5da8fb7a5d75b48011933f19c7c0ffae6df950c
font_01_sfnt_off0000837e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837E 10812 bytes
SHA-256: bd4f6938b87ba4ed694af6d1dc76643a72cec066ae0f2474e0f09c4be50992ca

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