Malicious PDF — malware analysis report

Static analysis result for SHA-256 94fa3f38f83a51dd…

MALICIOUS

PDF

41.7 KB Created: 2020-08-01 21:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9531b76b00f23fd5991142eabb4c613 SHA-1: 2fcdf3a5775915c9d82b703edfd5686a8f2f5eb3 SHA-256: 94fa3f38f83a51dd67bceba5f06ff3e7bd366d047e8f95e79beadd506f2c1e61
194 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, containing numerous embedded URLs pointing to other PDF files. One of these URLs, 'https://ttraff.ru/pify?keyword=best+friend%2527+s+brother+lyrics', is identified as a malicious redirector. The presence of a large number of external links suggests an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. No scripts were extracted from this sample.

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=best+friend%2527+s+brother+lyrics In PDF document text
    • http://files.emilygoldbergchicago.com/uploads/1/3/1/1/131164153/rixobaveb-rorel-jopom-rebuvorezoviz.pdfIn PDF document text
    • http://files.controlengineering.net/uploads/1/3/0/8/130814043/zugimo_petotezorilav_vixojizonub.pdfIn PDF document text
    • http://files.carockart.org/uploads/1/3/0/8/130813979/32d65a0872d9814.pdfIn PDF document text
    • http://files.onenationingod.net/uploads/1/3/2/6/132681340/5212827.pdfIn PDF document text
    • http://files.kidsonuptherapy.com/uploads/1/3/0/7/130776366/mamekuvepuf.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/1/0438/0118/2370/files/34519240771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4832/8603/files/rotux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3899/7669/files/jixukurasafewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7128/3098/files/3251818260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6931/7013/files/47024126332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tadigepulimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6666/1791/files/aldous_huxley_the_doors_of_perception.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9286/9281/files/93712563324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugerivedisabuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/62921051731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7931/1253/files/nivirafijotutilirularuw.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_off00006555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6555 5224 bytes
SHA-256: 2f34996f1f5031c68ddaefbe9d23f7aa1223f2d05ccc8204b98ca8f2dc8ce111
font_01_sfnt_off0000772a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772A 10124 bytes
SHA-256: 64868be6c4bc92a6ad6459f56c7deaa3307006fb6fbbab14479e00ebb509dd3f

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