Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ff7142d39c8c710…

MALICIOUS

PDF

40.2 KB Created: 2020-08-23 11:42:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d86a02fed58aa6c5affa001b1409c91d SHA-1: 0a28edc7416d6183a67c5262f41b0b61137b8f01 SHA-256: 2ff7142d39c8c7107daba952c97d8758597efd8825865625ff313c62bf9d4c22
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised with a lure related to 'Gb whatsapp plus terbaru'. The document also features a large number of links to other PDFs, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to increase visibility. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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=gb+whatsapp+plus+terbaru In PDF document text
    • http://ketator.heritagefloristcortland.com/uploads/1/3/1/4/131453558/6172085.pdfIn PDF document text
    • http://files.hchsband.com/uploads/1/3/1/8/131856027/2700668.pdfIn PDF document text
    • http://files.robinroenker.com/uploads/1/3/1/3/131379356/filozaloda-bowutepidizuri-xogujukozeb.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/1/0430/3529/5905/files/gallon_to_liter_conversion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/tomupovajej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/taxasaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/1988/2911/files/bhu_bsc_ag_question_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5772/files/where_are_the_hosts_files_in_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1796/9570/files/access_manager_professional_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5943/0047/files/29229892468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1251/4201/files/gitlab_ci_artifact_curl.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_off00006018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6018 5172 bytes
SHA-256: f34de4b079e495a79c0d40a2a3c33843a406d55ee289c7d694f60a7196c95a19
font_01_sfnt_off000071ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BA 10092 bytes
SHA-256: 2a7ada8fb7b6f218d804e802ee5f3fb425d8d546bdc7acb4736029fd59407c87

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