Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d86b9693ba03546…

MALICIOUS

PDF

42.7 KB Created: 2020-08-17 05:19:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7094bd61a6d7e013a73b25ec968a50e SHA-1: dffe35d914fdf382a7fa93c495c1ac142a2e100c SHA-256: 2d86b9693ba03546c65a89d9e116799b0931ea76ecbbd857fb6fcf91939f7e70
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, including a critical link to a known malicious redirector at ttraff.ru. The document body, though partially corrupted, contains text related to 'Medicare guidelines for oxygen therapy' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous PDF links and the malicious redirector strongly indicate a malicious intent to redirect the user to harmful content.

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=medicare+guidelines+for+oxygen+therapy In PDF document text
    • http://files.womenforthesupportofagriculture.org/uploads/1/3/0/8/130814515/5760916bc67c.pdfIn PDF document text
    • http://soludefux.leeloosesotericorner.com/uploads/1/3/1/1/131164250/77803aaada77d3a.pdfIn PDF document text
    • http://kikexed.bellereidfarm.com/uploads/1/3/1/4/131453109/novitisiwawob.pdfIn PDF document text
    • http://files.10dayfilm.org/uploads/1/3/1/1/131163980/8032786.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/1/0439/9398/9278/files/free_printable_dyslexia_worksheets_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9533/0717/files/statistics_david_freedman_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/jefimufarufixevoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/silizesaloxemaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/ludidorujumubifawibosal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/23423592182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/damadizumobaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/53390923906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/28676039124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5091/8310/files/14887373448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9012/4708/files/cs_lewis_miracles_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0743/3125/files/84791489244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4055/5676/files/gobijofesajobesogipu.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 3

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_off0000671a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x671A 5592 bytes
SHA-256: 74838c90706a64e4b545f70b62b55b50fff52e46ece705ed222f3ebcf4750621
font_01_sfnt_off00007a2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2E 10492 bytes
SHA-256: f03a6fa2ceb8be48bc3628f1d6af12521fe2b05b8f23de60cb3a2f84afbcbc9c

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