Malicious PDF — malware analysis report

Static analysis result for SHA-256 8829d5eace6f5081…

MALICIOUS

PDF

33.8 KB Created: 2020-08-06 03:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e8c0950e7cb0d2cb8a08a43fdfc4444 SHA-1: 61bf616c594513e6a98b40b6c3a9eee1ae6c4b15 SHA-256: 8829d5eace6f50810975b6f1263cad77f139c5c0d7586367a015f58e391f3cf1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded links, many of which point to a redirector service (ttraff.com) disguised as a free download for a piano book. This SEO-based link farm tactic is indicative of a phishing or malware distribution scheme. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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=bastien+piano+for+adults+book+1+pdf+download In PDF document text
    • http://files.diopayouth.org/uploads/1/3/1/3/131380094/gojeforezow.pdfIn PDF document text
    • http://files.cardiffband.org/uploads/1/3/1/4/131454286/doxuxevol_rebedipazimu.pdfIn PDF document text
    • http://files.emmaunderwood.co.uk/uploads/1/3/1/3/131384636/a882f88a.pdfIn PDF document text
    • http://files.escapeworks-ov.com/uploads/1/3/0/8/130814423/rufun.pdfIn PDF document text
    • http://files.travelingnurses1.com/uploads/1/3/1/6/131606605/9509599.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/1/0450/9509/2376/files/central_machine_wood_lathe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9074/6271/files/89957329452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1711/7601/files/galvanic_corrosion_prevention.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4263/4917/files/29632025695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/setowejopuwogulavonemitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8286/5058/files/zedimal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/80804151078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5175/9269/files/papyrus_of_ani_egyptian_book_of_the_dead.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81108552740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4517/4939/files/80080947098.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46C4 5432 bytes
SHA-256: 7c36368023f3e7c32d574b8878ba9c6797668962c5d93b3e551e1f716d905d0c
font_01_sfnt_off0000595e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x595E 9548 bytes
SHA-256: 030448638ef2cf6cd3bac9dc1407c23d9ad79a146c1e31059d9d9592fc983570

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