Malicious PDF — malware analysis report

Static analysis result for SHA-256 d888bd9d28c3ad3d…

MALICIOUS

PDF

46.8 KB Created: 2020-08-26 14:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f2d4c46d03e32c30ffac42ebe9fcfaa4 SHA-1: f5bcf209477cb5886368a7f5bbaaccbe6d5c93a8 SHA-256: d888bd9d28c3ad3d513d77c5f0394aff09cc057eedc4f629ff019d09dd96e452
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a critical redirector link to 'ttraff.ru'. This URL is part of a link farm designed to deceive users into downloading files, masquerading as a free PDF. The document body also contains the same lure text and URLs, reinforcing the social engineering aspect. No scripts were extracted, but the primary attack vector is the malicious redirection.

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.ru/pify?keyword=the+little+book+of+valuation+free+pdf In PDF document text
    • http://givovudu.quietlyjudging.com/uploads/1/3/1/4/131436967/sumironese.pdfIn PDF document text
    • http://files.ashlynnsboutique.com/uploads/1/3/0/7/130739340/d87cff3.pdfIn PDF document text
    • http://files.relst-uhag66.com/uploads/1/3/1/8/131871644/9267640.pdfIn PDF document text
    • http://fixoroka.thearmwrestlingarchives.com/uploads/1/3/1/6/131606490/5521170.pdfIn PDF document text
    • http://direbega.glomcdonald.com/uploads/1/3/1/4/131437423/kibewewe_xesuwonu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7011/8302/files/zomidogagafapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1246/4550/files/papyrus_sprite_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9114/9471/files/zexawederilolefokedig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/88667310535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2487/5674/files/sopuravulago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5018/8443/files/kepolenorazozujofixovax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2830/8387/files/gexawubumibutefozasesut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0523/8692/files/rewaxonoladudizetexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7851/5864/files/kobebajizikipewataxojixup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3235/4727/files/60036514746.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 7

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_off00006c7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7A 5044 bytes
SHA-256: 3e2ea0632eb68df75ffb1b722296e3aee3e4f75146959114e0a76be44409a4d4
font_01_sfnt_off00007d8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8C 10192 bytes
SHA-256: 562b97c7dd8ff52d2027dcb3d54eef6cf0cdb25a98d6e569819ab1ce2eeae421
font_02_sfnt_off0000a060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA060 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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