Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f0f6b242e32c65…

MALICIOUS

PDF

43.0 KB Created: 2020-08-16 20:59:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e86f1ed541a7e11daf5c93b878b8358b SHA-1: d28896d1651a123c205036dfc0f63c52307a21fc SHA-256: c2f0f6b242e32c65229a848f3978ea8aa020299688fcde039087a4ea27daec47
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to 'ttraff.ru', identified as malicious redirector infrastructure. This suggests a link farm attack pattern, likely intended to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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=how+to+create+design+style+guide In PDF document text
    • http://files.rachelfelstein.com/uploads/1/3/0/7/130740222/fatugiz.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/1/0434/0069/1862/files/kewiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/clicker_heroes_idle_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0652/4566/files/92160895935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6026/4086/files/62951246817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/44208242791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/2004_ford_expedition_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/allison_transmission_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1503/5291/files/manual_rebar_bender.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3155/1400/files/kampala_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0402/5242/files/dave_ramsey_budget_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3448/3616/files/wozuwituralakok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/guzolozifowiliju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/xipafaxosug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9617/7816/files/methow_valley_bulletin_board.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 1

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_off00006af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF5 5260 bytes
SHA-256: a02b21594a8c486e16cc5a3c9cde408d746c1d3a7a6ec3f2448bd955b4b01358
font_01_sfnt_off00007cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF4 10040 bytes
SHA-256: bbcb1cc889ec6e9462f252b38df12919b326cc7b7ea090489e56648d44129631

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