Malicious PDF — malware analysis report

Static analysis result for SHA-256 c97d383c20237e67…

MALICIOUS

PDF

57.1 KB Created: 2020-08-05 09:40:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ecdd9508e16f6cf4c8470993c43e3a54 SHA-1: d1642d6c3d71f332414bc0ef12750581eea3774a SHA-256: c97d383c20237e67f11ce9c2c8f4a968e2f0ceb434251484969fd4010ad5c46d
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.cc/pify?keyword=appraisal+and+evaluation+pdf'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to obscure the malicious destination. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=appraisal+and+evaluation+pdf In PDF document text
    • http://files.theclermontvenue.com/uploads/1/3/0/8/130813516/45e546481.pdfIn PDF document text
    • http://files.wetfinishes.com/uploads/1/3/1/8/131872079/1519807.pdfIn PDF document text
    • http://files.christinekingcounselling.com/uploads/1/3/1/6/131636682/4b83bef48ff7ad2.pdfIn PDF document text
    • http://files.brickwallcoach.com/uploads/1/3/1/4/131483603/f416c0e.pdfIn PDF document text
    • http://files.carnivalincovington.com/uploads/1/3/0/7/130775977/5226138dad4ef.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/1/0435/3120/6808/files/48940542824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/bebovilaronawameb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8038/3653/files/xapapimopew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/navobixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/nomuvaleditalulabev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0609/8597/files/8089528989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7978/4866/files/wifipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/88969203208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/79794016305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/webasa.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 6

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_off00009759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9759 5084 bytes
SHA-256: 1f09080912464b53a8a2db63eb7c5941eea0f5ed780144b56e58ff7178f6dbd6
font_01_sfnt_off0000a8b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B9 14176 bytes
SHA-256: b1a274aec3e8e224e9894d9c231b24f7b23177ad6946edb593ab2233cb612a25

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