Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f5d01cb6c793f00…

MALICIOUS

PDF

41.1 KB Created: 2020-08-12 12:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a111ebf14bdddc1a0dc7adab91557cf SHA-1: 293a04f50a7de5c9d1eccac21ca5b028f87b05e8 SHA-256: 9f5d01cb6c793f00b506c5810e59c95069e8f2da29501e006acc8c511b081829
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a primary malicious redirector link to 'https://ttraff.ru/pify?keyword=autonomous+vehicles+research+pdf'. This indicates the document is designed to lure users to a potentially harmful website. The document body itself is heavily obfuscated and contains embedded URLs, further supporting the malicious intent. No scripts were extracted from this sample.

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=autonomous+vehicles+research+pdf
    • http://files.denniscosta.com/uploads/1/3/1/8/131856158/rifarixo.pdf
    • http://files.elenatziollo.com/uploads/1/3/1/1/131163599/nobejurun-xagupabubep-nizofuxekabu-dutomokizeraxot.pdf
    • http://files.longgame.co.uk/uploads/1/3/1/6/131636808/bugebufefu-fobanavawezap-guzobudujazow-zupizusaxel.pdf
    • http://files.cortneydenman.com/uploads/1/3/0/8/130874633/1642195.pdf
    • http://jutodiwof.bodilycharm.com/uploads/1/3/1/1/131164250/8516140.pdf
    • https://cdn.shopify.com/s/files/1/0435/7432/9499/files/elizabeth_bathory_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/aretha_franklin_funeral_program_booklet.pdf
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/75101571048.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/xawipowezaxejezosibalitew.pdf
    • https://cdn.shopify.com/s/files/1/0430/6265/7177/files/alain_touraine_biografia.pdf
    • https://cdn.shopify.com/s/files/1/0429/2549/0332/files/taxusuxu.pdf
    • https://cdn.shopify.com/s/files/1/0436/8426/6137/files/fatelu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5625/0525/files/vususo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/42975477308.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdf
    • https://cdn.shopify.com/s/files/1/0434/3706/4348/files/3519760339.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7248/files/square_root_algorithm.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_off000062e4.bin
4dca6793d147f09c5043b8c88cbd6ed13f1faa9072c77a1c4522ed5993682d59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62E4 5444 bytes
font_01_sfnt_off0000753d.bin
aabc7258ee5ffac2209e7ec01ccba14abf7f6ecc1067a238b3be20a76ec56922		 pdf-font-stream PDF embedded font (sfnt) at offset 0x753D 10104 bytes

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