Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfe61b7f785810bb…

MALICIOUS

PDF

44.4 KB Created: 2020-08-06 07:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7b8f4c28801d54b988b6838c70f6abe SHA-1: 90006a5dc8b8375b41d7f887843eb126b9beb4d5 SHA-256: cfe61b7f785810bb33cf865882753b5f1920f50a0100b6dd07a487da2eeead3c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm and a critical redirector link pointing to malicious infrastructure. The embedded document body text, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=graphene+tutorial+pdf', suggesting a lure to download further content. 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=graphene+tutorial+pdf In PDF document text
    • http://files.lilyandjoantheatre.com/uploads/1/3/2/7/132740905/191424.pdfIn PDF document text
    • http://puzezaxif.culturempls.com/uploads/1/3/1/4/131454106/xilumawudozada.pdfIn PDF document text
    • http://files.lunadeviyoga.com/uploads/1/3/2/8/132816185/tizitem.pdfIn PDF document text
    • http://files.millerunitedmethodistchurch.com/uploads/1/3/1/4/131482975/satubu.pdfIn PDF document text
    • http://dojiju.christyokeeffe.com/uploads/1/3/1/4/131407668/92d3a.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/1/0428/7542/0835/files/pitokapijukami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/54865141674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/nobam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9930/8711/files/capitals_of_different_countries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/83228535742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5403/0231/files/felotuzusozimojelatazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fejekav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6013/2005/files/lufodivetimolaputet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1536/2984/files/4764271737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/the_economist_magazine_free_download_july_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/gufomipilaras.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 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_off0000698c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x698C 4980 bytes
SHA-256: 849bf248b61e06ecaba3b5f4af4f6ff0fd61b2fb007c9888993caa6a77081af4
font_01_sfnt_off00007a77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A77 10136 bytes
SHA-256: 84b2e911049225e07a84a8e5be8892c34c65a8287c7cc78f4c1193682ad48102
font_02_sfnt_off00009cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CFC 1736 bytes
SHA-256: 0d9b6ab0354368cdfa5a4e52e4dfb250ede80cec4283e48fafec0a3c1c1d30df

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