Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9c9dcce1c3be3d…

MALICIOUS

PDF

42.9 KB Created: 2020-08-07 09:24:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bcb805ead75381bf3da23e0fdb682460 SHA-1: 6d07a4f81a4af52cfbf5c97194d5ef3aff012ee4 SHA-256: 7c9c9dcce1c3be3ddd6aa1231364a55e461ce6a0850118ab2f8620d9f03aa2ee
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.com) that is known to host malicious content. The document body, though heavily obfuscated, contains the same redirector URL and appears to be a lure for free content, likely a phishing attempt. The ML classifier strongly supports the malicious nature of this PDF.

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=cheryl+blossom+comics+pdf In PDF document text
    • http://files.planning4yourfuture.com/uploads/1/3/0/7/130739674/mosezimagugipiwaba.pdfIn PDF document text
    • http://segav.luisarciniega.org/uploads/1/3/0/7/130775379/5988389.pdfIn PDF document text
    • http://files.hilesassociates.com/uploads/1/3/0/7/130738722/keletupukeripu.pdfIn PDF document text
    • http://files.zilpavandergragt-artstudio.com/uploads/1/3/1/4/131438443/bowalifavo.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/1/0427/8140/9436/files/86394105132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/suxukereki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/economist_may_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9620/1629/files/mexabevelizufetedosili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1243/8685/files/bigazizepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5422/7871/files/nokovexazokijipuporaviru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5040/0928/files/besafusomitodavupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/423234735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6625/3724/files/13512478496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/38510241962.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 2

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_off00006ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB7 5332 bytes
SHA-256: bab88f654222bd1bda4e7362594c22e11d8aaf34e753cd5fdf9c7507c430ab47
font_01_sfnt_off00007cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB0 10092 bytes
SHA-256: 3f8bb661a1027a50a2a3b49859b4ce30f0420b3eb7a4aa86e3ed3bed1fc0e922

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