Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec33855f22e87519…

MALICIOUS

PDF

36.4 KB Created: 2020-08-28 11:25:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a924fddd178d4f878ed127b7736c6126 SHA-1: ed02481af6789421d053561535f648089b370476 SHA-256: ec33855f22e875195b4c3690ba7a4cbdae49e1b6de04c31488f7e58e4c136878
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=manual+de+reparacion+de+motos+italik', which is also flagged as malicious. The presence of a PDF link farm suggests an attempt to manipulate search engine results or distribute malicious content through seemingly legitimate documents.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=manual+de+reparacion+de+motos+italik
    • http://gabulomib.christopherparizo.com/uploads/1/3/1/4/131437502/rotijarus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdf
    • https://cdn.shopify.com/s/files/1/0431/0505/8976/files/dobigepitudedaru.pdf
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/24215164757.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/analytical_reasoning_questions_and_answers_for_nts.pdf
    • https://cdn.shopify.com/s/files/1/0428/5035/3318/files/galikifonevodonedoro.pdf
    • https://cdn.shopify.com/s/files/1/0438/0812/9185/files/la_quinta_inn_las_cruces.pdf
    • https://cdn.shopify.com/s/files/1/0428/6060/9703/files/1750748359.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/the_way_of_kings_book_1.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/kuvusobexod.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6600/files/hilton_brand_standards.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/real_madrid_fifa_20_career_mode_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/95923085711.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_off00004cee.bin
a48f0dd1bb28f54a925b5f3efc2b94ae43c1650e45abdde854756edc10c18763		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CEE 5288 bytes
font_01_sfnt_off00005ecc.bin
01ec66700850d556945cc85d507a69fb4a081ba21419e25d033816616148e2ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECC 11212 bytes

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