Malicious PDF — malware analysis report

Static analysis result for SHA-256 6500266fc881064c…

MALICIOUS

PDF

39.6 KB Created: 2020-08-25 18:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cff44d21312f8f74cb5f5b642e505469 SHA-1: 30b425491691a6b82ee80f3f5c9e86bd8bffc4ef SHA-256: 6500266fc881064cc957533bb11a082e3559227f95b78d204f882114f4b827b7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one identified as a malicious redirector. This redirector, 'https://ttraff.com/pify?keyword=cengage+physical+chemistry+part+1+pd', is likely part of a phishing or SEO scam to lure users to malicious sites. The presence of numerous external PDF links further supports the SEO link farm heuristic, indicating a campaign to generate traffic or distribute 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=cengage+physical+chemistry+part+1+pd In PDF document text
    • http://files.conesetsclass.com/uploads/1/3/2/7/132740361/2808063.pdfIn PDF document text
    • http://wanox.usaboxingmetro.com/uploads/1/3/0/8/130813528/4d045a0.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/1/0431/2953/6676/files/liranefoboxef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7687/7478/files/pulepopirim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3059/3192/files/lavajumaril.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7328/9888/files/werapapufirejeloxamolel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/13106105357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/kitijulakezafajomolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7125/0336/files/zanilivupawod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/xaligelekapeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3400/4891/files/bansal_classes_chemistry_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5588/1115/files/bsc_magazine_october_2020_free_download.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_off00005cbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBE 5544 bytes
SHA-256: 87ef889554a01169d8264f424653092ad18ed1e51a0f497c1e6f5c381404e7e3
font_01_sfnt_off00006f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F70 10068 bytes
SHA-256: b8ff27b85f5662bc1b1cd4b5b5e284079aa3eedd485c0ead5925079c07ceffd0

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