Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f5e8d0cf5648c3f…

MALICIOUS

PDF

41.0 KB Created: 2020-08-11 01:33:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60f3dc213eca905631c88e00ca188104 SHA-1: 320808fd5aa55f1b10d1defa9208f0b70744f02c SHA-256: 0f5e8d0cf5648c3f032bd408b67dd3dc4d3b5a27a0a341db11fc3dd24b8e09db
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, many of which point to a redirector service at 'ttraff.ru'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a phishing or spam campaign. The ML classifier also strongly flagged this PDF as malicious. The primary IOC is the redirector URL, which is likely used to funnel victims to malicious sites.

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=without+you+the+tragic+story+of+badfinger+pdf In PDF document text
    • http://files.helpfulmeditation.com/uploads/1/3/1/3/131379085/6063226.pdfIn PDF document text
    • http://files.kidstopinc.com/uploads/1/3/2/6/132681303/foximudiwinig.pdfIn PDF document text
    • http://files.jenniecaseysinnott.com/uploads/1/3/0/7/130739234/wezubevon_zulijubawuxuvok_banerobekakabas_mafumefom.pdfIn PDF document text
    • http://jajewit.theseniorsage.com/uploads/1/3/0/8/130873851/bb4c9e4.pdfIn PDF document text
    • http://files.drtulagan.com/uploads/1/3/0/9/130969356/vajomumetib-tobotewuxekawej-vadofobovo.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/1/0431/6338/6017/files/mawazuriposadatatita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6127/8870/files/31365556568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/wuragixisag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/24733352598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7955/7529/files/deviwevut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8448/9631/files/visuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/94343738679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/advantages_of_social_media_on_youth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/master_editor_blogspot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7713/0647/files/artificial_intelligence_projects_for_computer_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9217/3217/files/10274008475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/56420789194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/28810346641.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_off0000600d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600D 5640 bytes
SHA-256: 1d371a284120c56ed6b773bed82145f19303a09400dc3f1446c8d7c7d2e140cf
font_01_sfnt_off00007348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7348 10352 bytes
SHA-256: 3d7739bbc9f0f07696e48fd36d67fe8f1e38129b3aef2733a0be39772e58e617

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