Malicious PDF — malware analysis report

Static analysis result for SHA-256 c49fe86bd63a80d6…

MALICIOUS

PDF

48.0 KB Created: 2020-08-12 16:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36602b6d29f40ff2035c4f418a148c64 SHA-1: 17a8c9c52a9d6bc4805a011cbdb6ce5baed4b110 SHA-256: c49fe86bd63a80d69c6cb4fcce01203689f782dc8259e8cfe92f7b53559d71c0
194 Risk Score

Malware Insights

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

The PDF contains a critical link to a known malicious redirector at https://ttraff.ru/wb?keyword=peritonitis%20bacteriana%20secundaria%20pdf. Additionally, it hosts a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

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/wb?keyword=peritonitis%20bacteriana%20secundaria%20pdf In PDF document text
    • http://files.saintlukemclean.org/uploads/1/3/2/6/132681144/pafopimitopotirafom.pdfIn PDF document text
    • http://files.millimanquarterhorses.com/uploads/1/3/0/8/130873718/kunexuzorodi.pdfIn PDF document text
    • http://kerari.humphreysfreelancemedia.com/uploads/1/3/1/1/131164250/d8c1eb22.pdfIn PDF document text
    • http://zigikavek.iolascott.com/uploads/1/3/0/7/130738732/getaweripem.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/1/0430/7674/7413/files/bearing_number_identification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1952/5531/files/madazikosid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/juxilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/korusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8570/8968/files/34997710873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/fukijude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/tenuberimitikorepofam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8641/3985/files/minecraft_attack_on_titan_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/idioms_and_phrases_for_ielts_writing_task_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1748/7011/files/85237141900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/74917003604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9446/5948/files/43388501329.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 4

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_off00007c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0C 5260 bytes
SHA-256: 850cb68c6db3a97b0ea88001bf5fff0149b663910fecdcc2db38bc2aeacdf72c
font_01_sfnt_off00008ded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DED 10800 bytes
SHA-256: 8cdb391e12f0016345552a39250554805ff80f7db128360c8ed4992a37d1929c

Open this report in the interactive analyzer, or submit your own file for analysis.