Malicious PDF — malware analysis report

Static analysis result for SHA-256 c907c243fd4c3949…

MALICIOUS

PDF

77.3 KB Created: 2020-08-20 12:32:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51fa0d9ef53792b905967b60ebc6b0a8 SHA-1: 33fbc7f3d93747d894a87cb10820a547266cfbd8 SHA-256: c907c243fd4c39490b71b25141b4750bbf76b324ae31a9f71c1699f72dfb0a43
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body text, though partially garbled, contains the phrase 'Open the tasmac video song' and the malicious URL, suggesting a lure. The PDF_SEO_LINK_FARM heuristic indicates the presence of multiple external links, likely for SEO manipulation or to host further malicious content.

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=open+the+tasmac+video+song In PDF document text
    • http://files.folsomstrings.com/uploads/1/3/1/4/131413550/voluteno-kenukabudem.pdfIn PDF document text
    • http://files.vivagreb.com/uploads/1/3/1/6/131637034/kimab-sugala.pdfIn PDF document text
    • http://ridakuwuw.erinlands.com/uploads/1/3/2/3/132302978/96999cf40ad9.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/mubexuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7367/3118/files/gibajexabogubideloredoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/33461014206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1488/1433/files/amadeus_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6117/files/70068354510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7256/8996/files/tiburepaxowonid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1988/3928/files/coumadin_davis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/4974395982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0924/4316/files/wexolijogatobolimajeneg.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

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_off0000db09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB09 5444 bytes
SHA-256: f8b524893cf6617384356b6f2c61b5f67bfad8a805816ab67dab8dfe10a51d76
font_01_sfnt_off0000ed65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED65 10916 bytes
SHA-256: ab7bdebdb5494ba819f1f56c99f08c9ec3d7f35f5ff1205d5b6eb061333fbe1d
font_02_sfnt_off000112bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112BB 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6

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