Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b6fd31edaffa34…

MALICIOUS

PDF

51.0 KB Created: 2020-08-08 22:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4990a4587778a31ae2840389dd9af443 SHA-1: 6128fda16283c8dbb96e48edf067e53ae681429c SHA-256: d0b6fd31edaffa3455211d71c2a20390f5848f88f11ab9788a2d779c7c2e30ad
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=microbiology+of+biogas+production+pdf'. The document body also contains numerous links, including this malicious one and others that appear to be part of a link farm designed to manipulate search engine results. The primary goal appears to be directing users to potentially harmful websites.

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=microbiology+of+biogas+production+pdf In PDF document text
    • http://lixasajep.riscooper.com/uploads/1/3/2/7/132712207/dekawubaduwevodune.pdfIn PDF document text
    • http://ninikej.elbeephotography.com/uploads/1/3/1/8/131856333/gifigemomojumub.pdfIn PDF document text
    • http://files.yomommasapronstrings.com/uploads/1/3/0/8/130814110/zitorol_bipolus.pdfIn PDF document text
    • http://files.hubcaphobbies.com/uploads/1/3/1/3/131398374/simutigesen.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/1/0428/8030/3263/files/naruto_shippuden_english_dub_episode_336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/gufulozafupifujeser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7427/3948/files/24828128558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/cub_cadet_125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2490/6397/files/29135701870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/60364946161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7822/files/20872864774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9639/1323/files/nopekurikiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/bilopebare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/mutonubez.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_off00008969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8969 5568 bytes
SHA-256: dd764438b75e2c1484c47fe4d35e3f623f30d94a54966d7a4422f86660cc4ce4
font_01_sfnt_off00009c7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C7A 10048 bytes
SHA-256: 5bc25fe7c0ed3dcdb5a96a5a2f81b894557645c1e6ce4d518e847fe350048469

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