Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ae1d274d5601ccd…

MALICIOUS

PDF

46.7 KB Created: 2020-08-25 01:45:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b55d2fa09568d7563a070d51bb8ad15 SHA-1: 30317380a707c0b0c8edbb47ab1aa37de2d4eaec SHA-256: 3ae1d274d5601ccd58e1eda61c147d026a23c16fa25a43e027a91fa68ba3f792
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to a 'strange brigade pc game free' and the malicious URL. This suggests a social engineering lure to trick users into clicking the link, likely leading to further malicious content. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious 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=strange+brigade+pc+game+free In PDF document text
    • http://baxiluw.engagementlearningpress.com/uploads/1/3/1/3/131383297/28fb051.pdfIn PDF document text
    • http://vutit.jbelle.com.au/uploads/1/3/0/7/130776167/f3d9da3c6191.pdfIn PDF document text
    • http://files.yummyandcompany.com/uploads/1/3/0/7/130775997/30d3891.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3025/6536/files/gelopufozam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/xodasijes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/64816178044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4809/0270/files/latest_marathi_movies_utorrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/4947/0363/files/12776096828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/meleraraj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3426/2169/files/ups_waybill.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/broadsheet_brisbane_italian.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5160/6435/files/10960441314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6949/7753/files/79601106876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/8275/4722/files/minority_report_movie_parents_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9103/8118/files/sonda_vesical_demora.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000665a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665A 5188 bytes
SHA-256: f984497778ddbba6553ce51a04fadc9a1e6de126f3ddcbe7887773ff72589dcb
font_01_sfnt_off000077d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D9 12408 bytes
SHA-256: 52efe02641a8a83ff61bd60a03c4d495caf6e730443c81149a4aa6bdf4f1359f
font_02_sfnt_off00009feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FEB 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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