Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2272a21189f0853…

MALICIOUS

PDF

52.5 KB Created: 2020-08-18 21:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ecf738cece50d8515b8941aa72b6cc5a SHA-1: d08a4a5e593bbde013680774281a767426d9a8fb SHA-256: e2272a21189f0853d3d4c9d1db29691b2fb779d28842d3dcbecd349f70f68c2b
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a PDF redirector link pointing to 'ttraff.ru'. This URL is part of a link farm, as indicated by another critical heuristic, which attempts to disguise malicious links within seemingly benign documents. The ML classifier also strongly flagged this PDF. The embedded URLs suggest an attempt to lure users to external, potentially 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=infosys+reading+comprehension+questions+and+answers In PDF document text
    • http://files.copsintransition.com/uploads/1/3/0/7/130739169/7564145.pdfIn PDF document text
    • http://files.jeffjacobshpe.com/uploads/1/3/0/7/130738758/jawobugelokij_padaninodur_fakigiser.pdfIn PDF document text
    • http://files.sheng.studio/uploads/1/3/2/3/132302787/5644156.pdfIn PDF document text
    • https://www.gamblingid.com/In 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/1/0432/2020/5726/files/amphoteric_compounds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2144/2977/files/rajasthan_current_affairs_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6828/3294/files/rilonuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/c_format_specifiers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/18252376821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/oakland_raiders_injury_report_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1305/4359/files/1996_ford_bronco_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1983/7346/files/54292514443.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE2 5676 bytes
SHA-256: c08ca9530c78a5e595d13eaa8383d537a33e1a523b632e1d4ae99add7abe0aa7
font_01_sfnt_off00009213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9213 10696 bytes
SHA-256: 7d51c2482be74fee7fb1976a64067e48add2b633f8ca02b93eb06a0ae7e324a2
font_02_sfnt_off0000b662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB662 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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