Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2cd095f3640728…

MALICIOUS

PDF

38.5 KB Created: 2020-08-09 23:58:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e2ba26f6d68a9070c8f14785d9b9894 SHA-1: 487349440714e644db5951f2b1903034be160e8f SHA-256: 9d2cd095f36407284b39dfae919cfc92a011881d3d7bd58365d253f187b3f3f2
194 Risk Score

Malware Insights

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

The PDF contains multiple links, including one that redirects to a known malicious infrastructure at ttraff.ru. The document body, though obfuscated, contains text related to a guitar tab PDF and the malicious URL, suggesting a lure to download potentially harmful content. The ML classifier also strongly indicated maliciousness.

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=another+brick+in+the+wall+part+2+guitar+tab+pdf In PDF document text
    • http://files.phjarchitects.com/uploads/1/3/1/4/131454090/8155264.pdfIn PDF document text
    • http://files.nnpsofaz.org/uploads/1/3/1/4/131437216/ffac8b23d.pdfIn PDF document text
    • http://files.piedmontlandscape.org/uploads/1/3/1/4/131453648/92343075.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/1/0432/3993/2064/files/mamukuzidavidox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/winchester_model_250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1427/4720/files/synonyms_antonyms_homonyms_and_homophones_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0168/3873/files/parkour_maps_for_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5618/5000/files/kigatukel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/caballo_de_troya_1_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/lukijuxijigozorumoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/22354010655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/national_federation_baseball_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1358/6596/files/71155516433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7689/4372/files/12545773046.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 6

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_off00005614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5614 5656 bytes
SHA-256: 11086142b07cc0ad83c08ecc0b406ccd8327449f8233068aea8e189cf61fae89
font_01_sfnt_off00006963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6963 10388 bytes
SHA-256: 654dd76d96e0d8596a79421008c697140e432ee5d8de3eef384ab240b338faa3

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