Malicious PDF — malware analysis report

Static analysis result for SHA-256 64cce27025299e28…

MALICIOUS

PDF

38.9 KB Created: 2020-08-28 14:25:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3475cdb55c3166261eca124febffec43 SHA-1: 3f5d6447baad58fdad561d52e663ba3e635614ff SHA-256: 64cce27025299e28b2e9f3f1e3d355aebee34909bc35da4fe62d02193e4d2ca3
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that lead to a redirector URL, identified as a malicious link farm. The document body text, though partially garbled, includes the same redirector URL and appears to be a lure for free music downloads. The ML classifier strongly indicated maliciousness, and the presence of multiple external links suggests an attempt to drive traffic to potentially harmful 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.me/pify?keyword=cepten+m%25C3%25BCzik+indirme In PDF document text
    • http://files.jhmtva.com/uploads/1/3/0/9/130969311/f6ddae96a0b7173.pdfIn PDF document text
    • http://files.sydniessweetlife.com/uploads/1/3/0/7/130740141/97152.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/1/0433/5540/6494/files/48721721497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0891/5613/files/ce2252_strength_of_materials_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9265/5780/files/timadigasasibavuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/96424809946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/nmr_spectroscopy_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26450106566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5719/1843/files/77814412718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6703/1200/files/5945229190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/9018936067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5680/7586/files/mathematics_printable_worksheets_for_grade_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7791/9129/files/27827145051.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_off00005a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A67 4824 bytes
SHA-256: 06d62883b21ccf870e90a2fc2f682fe07ed92abef4932217cca61dbb8d6bc841
font_01_sfnt_off00006a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A87 11196 bytes
SHA-256: 4792751dd4c6b247e5e2660f30e9cf6b58f7e26031c5c6daa2b09898b2316cdd

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