Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e80bd1c27a2677b…

MALICIOUS

PDF

44.2 KB Created: 2020-08-09 11:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23f9886d3c9a644e6cedc8ea9d3db4d6 SHA-1: ed3a9508a9d111d590cd912558d3d4ee5dc582de SHA-256: 2e80bd1c27a2677b9307d52cf0310e8e22e35dd7a51b46d2a8b3d58a96575242
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many pointing to Shopify domains, which is characteristic of a link farm designed to manipulate search engine results or distribute malicious content. One critical heuristic firing indicates a direct link to a known malicious redirector at 'ttraff.ru'. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack pattern involves redirecting users to external, potentially harmful, web content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=the+around+the+world+in+80+days+pdf
    • http://files.meghanzocchimusicstudio.com/uploads/1/3/0/7/130739991/149ace2477.pdf
    • http://files.kirkbylonsdalecivicsociety.org/uploads/1/3/0/8/130813134/bosam-powononogokupek-pitagapoxo-jezalewo.pdf
    • http://files.amethystmoonmojo.com/uploads/1/3/1/1/131164129/wilofirezota.pdf
    • https://cdn.shopify.com/s/files/1/0430/8189/1989/files/xapilevukaxofoxep.pdf
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/62774215041.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mudamizoxudaxusuzo.pdf
    • https://cdn.shopify.com/s/files/1/0436/4566/5433/files/tozononovevizadum.pdf
    • https://cdn.shopify.com/s/files/1/0438/0108/4064/files/lt_grade_biology_syllabus_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/bloodborne_pathogens_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/fidakojoko.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0796/files/geledazijanaledonax.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/bonakepilitinevume.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/14600152095.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/bituminous_mix_design.pdf
    • https://cdn.shopify.com/s/files/1/0432/8855/9780/files/xusevabipe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/66000881298.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6165/files/gavekuxuvawiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/mapa_mundi_fisico.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006df2.bin
11a16f145dde1355549be38310c11ad05fdead6945ca4f141cabc1c47bddcea3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF2 5608 bytes
font_01_sfnt_off00008115.bin
5c740cf3c27cc1921f447c02b42915029b10d412fb968ba84bf227e9b0e270b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8115 10152 bytes

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