Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f281f9f843d26c4…

MALICIOUS

PDF

86.3 KB Created: 2020-08-09 03:11:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 089cd85cafe68bb6a800ad8866a825bd SHA-1: 4be2b1adc576ee15bfbdfe370c1ca506374fddbe SHA-256: 3f281f9f843d26c4ffb4bcec6e165d30d5e4f13ea37aff508cdbfe1f51458ab6
194 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to generate SEO traffic, with one of the primary links directing to a known malicious redirector. The document body, though heavily obfuscated, contains text that, when combined with the heuristic firings, strongly suggests an advance-fee scam lure. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a keyword that appears to be part of the scam's narrative.

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=agamemnon+text+pdf In PDF document text
    • http://xakeniwod.sarkakocicka.net/uploads/1/3/1/3/131378776/gigudaf.pdfIn PDF document text
    • http://files.deaconmichel.com/uploads/1/3/1/4/131411688/6292661.pdfIn PDF document text
    • http://files.tavernegoudenpunt.be/uploads/1/3/1/3/131379540/tenopilopeda.pdfIn PDF document text
    • http://files.summithilltopperfootball.com/uploads/1/3/1/4/131406736/9a3d8f4c0faf1.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/1/0430/1104/7575/files/meiosis_1_and_meiosis_2_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/zunupim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/75833185219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3174/6967/files/70416769521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/essential_fallout_new_vegas_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0394/4858/files/classification_of_matter_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/webeluv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/wawiweliwij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/rakokitif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/doginarufegedatosedemox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5199/8623/files/xogil.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 8

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_off00011943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11943 5112 bytes
SHA-256: 77651cbf2ba00dc4ed0586bca626ff7866d6e7ec3a8f97b3a26777601393beee
font_01_sfnt_off00012aaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AAA 9892 bytes
SHA-256: 6cde8c14138dc11006cd6288aafecc510d07ff21c9839f9c415145e1e336e433

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