Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce77f8233b0d38e3…

MALICIOUS

PDF

69.5 KB Created: 2020-08-07 08:52:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83637e4a1e0346cfcefc64f3816718e9 SHA-1: 7485dc1c04afc5942a9d873c46b79af988df4daa SHA-256: ce77f8233b0d38e333d7277b46e02ba1e340245f32f17122342b909b1d8fdb80
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=10th+class+science+question+paper+pdf'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking it. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting the malicious intent of redirecting users to potentially harmful sites. No scripts were extracted, but the presence of a malicious redirector is sufficient evidence of a malicious attack pattern.

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=10th+class+science+question+paper+pdf In PDF document text
    • http://files.aawholesaledallas.com/uploads/1/3/1/1/131163945/8f745b.pdfIn PDF document text
    • http://files.christiestimber.com/uploads/1/3/2/3/132302815/a80bec9c772bc.pdfIn PDF document text
    • http://files.mrandmrsmusicco.com/uploads/1/3/1/8/131858481/funemiz_suxikijapopi_bosoz.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/1/0430/9463/8749/files/96819909098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7745/9363/files/foxidofolebulapudobuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6078/1465/files/19403390647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9076/files/tisedun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3051/0742/files/bascom_avr_projects.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8412/7135/files/24163650530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mojarugalemidim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6178/6262/files/breast_cancer_awareness_in_nigeria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34456372212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/97968233887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/65618712924.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_off0000c46f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC46F 5352 bytes
SHA-256: ff12c7786026ad8957b5d1dddca0a5dc36b7c25e098a13254cf9af3d093640ae
font_01_sfnt_off0000d683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD683 10592 bytes
SHA-256: d37784f17662588202632612bf7483df2183653597511cf3382aaf34a47399bf
font_02_sfnt_off0000fac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC4 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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