Malicious PDF — malware analysis report

Static analysis result for SHA-256 44f5849d76ef3526…

MALICIOUS

PDF

51.5 KB Created: 2020-07-23 23:38:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9c4174bdfad67fcf8afa2d6a86ea4cd SHA-1: 2bf44493026352d79e3f81a99fafa4ee9d77e730 SHA-256: 44f5849d76ef3526c446a10f1d7d5dd969b84be56bec3352d02a8bdd62f07198
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirector links, including one pointing to 'ttraff.ru' which is flagged as malicious. The document body, though heavily obfuscated, appears to be a lure related to financial statements. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to distribute malicious content or phish for information. The ML classifier strongly supports the malicious verdict.

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=apple+cash+flow+statement+pdf In PDF document text
    • http://files.kristinebournemsrn.com/uploads/1/3/0/9/130969148/4468759.pdfIn PDF document text
    • http://files.nhldraft.net/uploads/1/3/0/8/130814706/45fabdaee02.pdfIn PDF document text
    • http://files.prideontheplains.com/uploads/1/3/1/4/131453451/8054ae0.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/1/0430/7111/1330/files/penanovasilesonagasin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/vofojusikezerujukejob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vaxopegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4155504299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6119/9526/files/17461441907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8368/5274/files/sogaraguzabuvim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8748/5342/files/narepok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6415/6575/files/zogizir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4037/2896/files/97278888337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/90595048818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6710/5687/files/sukinikuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/58796461388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23535065851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9236/files/sorefexilanum.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8304 5120 bytes
SHA-256: 47d8479d6cc2d3efe4961f520a9f0a46ccc15cebfc9cb7b21a955c4979b244f7
font_01_sfnt_off00009459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9459 13672 bytes
SHA-256: a1a8b91ebb4755d55362c0dce3558eba16373ede7a4b973a336a4e3c85bfa9a2

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