Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d357411496fd525…

MALICIOUS

PDF

45.8 KB Created: 2020-08-18 13:44:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bbb94e322cead1a2ed07415379c3294d SHA-1: 2fc23ba1d658f5dd34aff8f4cd4550927afa258e SHA-256: 5d357411496fd5254aaa8a27f1311cdedb561805a5acd5b13d765edf236d7878
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains multiple heuristics indicating malicious intent. It functions as a link farm, directing users to a redirector URL (https://ttraff.ru/pify?keyword=cinematic+video+editor+android) which likely serves as a gateway to malicious content or phishing pages. The document body, though heavily obfuscated, contains embedded URLs, reinforcing the lure-based attack pattern.

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=cinematic+video+editor+android In PDF document text
    • http://files.ayercommunityschool.com/uploads/1/3/1/4/131453348/bosulirojizuzajiso.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/1/0429/8797/8913/files/naxab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/taniduvak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/revumaxobujarex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4586/2041/files/formation_apiculture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2400/6820/files/pretest_biochemistry_5th_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8782/6854/files/91800972096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/87255118214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/fesaruwowoxazot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/linidenopebogavapatirefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6354/1913/files/sale_leaseback_off_balance_sheet_financing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/60790217306.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_off000077b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B1 4840 bytes
SHA-256: dab8cecb6f77be945b67ff22884bf29d545f6cb45c0e74f32a5923d83a46be43
font_01_sfnt_off00008808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8808 10216 bytes
SHA-256: bca998a4b8d7b52982eeb7ca9851f1d0f4a1aba9ccf2b369a42e7e65f87fcf83

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