Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9a235491a51f4b6…

MALICIOUS

PDF

46.0 KB Created: 2020-08-18 13:04:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 582a52c69256100aa6ef0273c684b10b SHA-1: 68890067e72f831ca9685a07389e8aa35218d329 SHA-256: f9a235491a51f4b609baf3e4d991dbb7e5880f42f37e2d83300d9c4a1353a75d
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=2018+chevy+colorado+zr2+diesel+performance+parts', is flagged as a malicious redirector. The document body appears to be obfuscated or corrupted, but the presence of numerous links, including the malicious one, strongly suggests an attempt to lure users to harmful websites. 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=2018+chevy+colorado+zr2+diesel+performance+parts In PDF document text
    • http://files.2003ebaenglandscotlandtrip.com/uploads/1/3/1/6/131637308/vokosifavovanolopar.pdfIn PDF document text
    • http://files.lyyskidesigns.com/uploads/1/3/0/7/130776503/tozabuga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/toyota_corolla_automatic_transmission.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/wesovodinubaruva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8666/3070/files/nacionalismo_econmico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6821/8780/files/bioinformatics_data_analysis_courses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7753/2824/files/98890748331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1523/2921/files/james_sa_corey_caliban_s_war.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8460/1752/files/22443715339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7651/8049/files/95931324833.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FA 5820 bytes
SHA-256: 6d625b386a789484bd29f94446c0f1f2801f8c1d98b9e892f7ba76bea92323d0
font_01_sfnt_off00007aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA5 9968 bytes
SHA-256: 9e8fa70a722cf3f771c59b129db46f9d829b8ed500a068afc4b803303e76824e
font_02_sfnt_off00009ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE2 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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