Malicious PDF — malware analysis report

Static analysis result for SHA-256 f33c705ebad69811…

MALICIOUS

PDF

50.0 KB Created: 2020-08-21 04:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc8bfbf94ef5c816ed7301f96f74470d SHA-1: 60303d217dfd2648acad5b7aed5bb6cb8737e980 SHA-256: f33c705ebad69811f708015be5b977e8a9ae88d0bd1beab119cc94be5e7ed8f5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link that leads to a link farm of 30 other PDF documents, likely for SEO manipulation or to obscure the final destination. The document body, though heavily obfuscated, contains the malicious URL and references movie information, suggesting a lure to entice clicks. The ML classifier strongly indicated maliciousness.

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=adhyarathri+malayalam+movie In PDF document text
    • http://gurasude.doityourselfcustomers.com/uploads/1/3/2/6/132696030/bavebotigovafisivufo.pdfIn PDF document text
    • http://pegilar.frescooperatheatre.com/uploads/1/3/0/7/130775518/5893149.pdfIn PDF document text
    • http://logabu.hivmedfellowship.com/uploads/1/3/2/6/132680903/tuzomufomu-fagavetizudoj.pdfIn PDF document text
    • http://files.hezronspringer.uk/uploads/1/3/0/7/130738785/zubadibeviwurore.pdfIn PDF document text
    • http://zefokita.delidelicious.com/uploads/1/3/1/8/131872084/kidimasuripebo-dinizixewaxej-mupapes-zomik.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/1/0440/6883/1382/files/condiciones_para_el_aprendizaje_significativo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/5096791913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5719/1843/files/biografi_andrea_hirata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93515438816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8663/4390/files/haynes_small_engine_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1467/4841/files/latiwunojewiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6367/0944/files/maxojux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8149/0847/files/analytics_vidhya_machine_learning_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3166/5562/files/xifewefamubebubor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9486/8122/files/53525626281.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C7 4720 bytes
SHA-256: 86c6003b040b8df060b43d9db7dbb9dbd7abf0e2d93434cc7755bc53bade3b32
font_01_sfnt_off000073d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D6 10368 bytes
SHA-256: 98fd7a5bf3cd87e13bfda086c32a0aa7989d874055283b07193b0c1ae8511513
font_02_sfnt_off000097a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97A0 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
font_03_sfnt_off0000acb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACB5 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f