Malicious PDF — malware analysis report

Static analysis result for SHA-256 b90d5fe72c60629f…

MALICIOUS

PDF

39.1 KB Created: 2020-08-24 13:11:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f99c4f5eb049caef9bd8a27d0329440 SHA-1: de47486fc85e846c602f8a01561bb3ae95992214 SHA-256: b90d5fe72c60629fb0ddb2ae4328222059e108b54a77df6e74028dbb0665cdaa
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in Systems T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a search result for 'atom linux mint', pointing to 'https://ttraff.ru/pify?keyword=atom++linux+mint'. It also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify. The primary intent appears to be directing users to potentially malicious or unwanted content through deceptive links.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=atom++linux+mint In PDF document text
    • http://files.13ththeatreco.co.uk/uploads/1/3/0/9/130969053/3358463.pdfIn PDF document text
    • http://niwotemus.tarocks.com/uploads/1/3/1/6/131636725/retewatis-lisefodufivelej.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/1/0431/1754/3588/files/9801572976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5554/5497/files/46836386337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5267/6773/files/nature_s_cancer_fighting_foods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/playboy_price_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0069/1879/files/jogizupivetujemaramalofef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/xujugofalogofiwivaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/maths_quadratic_equations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6406/5190/files/amazon_cloud_practitioner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/86970885427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2947/9072/files/45764985407.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 3

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_off00005dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD1 4404 bytes
SHA-256: 4117b7e0fa7d1058881dd84691842e37d01d14e2ba54575ade1ac8ca5e606a3b
font_01_sfnt_off00006cbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBD 10300 bytes
SHA-256: 12beb54a9704f38324a1a003ee2dfa94763a7b2b8ed088f02065de737640633d

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