Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b2b0b5bfb7df4e7…

MALICIOUS

PDF

40.9 KB Created: 2020-08-30 10:29:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f83eff89597fb3742214e7324fb8f00 SHA-1: 85a956de2ea8db41aad082a4dffa875217024b95 SHA-256: 2b2b0b5bfb7df4e7ab503f8f8499ee07f98107a707fd126ca9bdce924167da7b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: User Execution: Malicious Link

The PDF file contains a large number of embedded links pointing to PDF files hosted on Shopify, characteristic of a link farm. One of these links, 'https://ttraff.ru/wix?keyword=verbe+2%25C3%25A8me+groupe+liste', is identified as a malicious redirector. This suggests the document is designed to lure users into clicking malicious links, potentially for phishing or malware distribution.

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/wix?keyword=verbe+2%25C3%25A8me+groupe+liste
    • https://cdn.shopify.com/s/files/1/0438/5131/7408/files/63173979860.pdf
    • https://cdn.shopify.com/s/files/1/0431/6764/5857/files/alabama_football_strength_and_conditioning_program.pdf
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/baring_bank_case_study.pdf
    • https://cdn.shopify.com/s/files/1/0462/1588/9050/files/83713400526.pdf
    • https://cdn.shopify.com/s/files/1/0434/0691/7799/files/mercurial_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/zimonawumilumonarabene.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/bizerba_slicer_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/8059/8172/files/74562850246.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/94225662838.pdf
    • https://cdn.shopify.com/s/files/1/0430/1268/5977/files/fuwululovafotedazu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/74524560597.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/42746903959.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/addition_property_of_equality_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2715/files/que_es_holismo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/4139482562.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_off00005e36.bin
f031fb03bc453904b523ff7815179871c4ffb60153b803377b310f45243207b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E36 5308 bytes
font_01_sfnt_off00006ff1.bin
9238013a9b843473285e437b1b5ce3a9d223864c914b502b175788be6b6d0b06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF1 11772 bytes

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