Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9497a83d38639fc…

MALICIOUS

PDF

56.8 KB Created: 2020-08-07 00:21:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c7149d26ada3afaae46cf0dfe9f13c0 SHA-1: 0342beec7c44e97a1c21b90a840a0aeb646a9f90 SHA-256: f9497a83d38639fc5de50c97307a397568b8a6dd3dd9133c642fd78ef6cc2d72
120 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a phishing or scam attempt, using a seemingly innocuous topic ('Binet s formula pdf') to entice clicks. The PDF structure and the presence of many external links indicate a link farm or redirection strategy to obscure the final malicious destination.

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=binet+s+formula+pdf
    • http://files.stevewestgroup.com/uploads/1/3/0/7/130775848/4a0d870.pdf
    • http://files.riverdaleridge.com/uploads/1/3/0/7/130775744/94bdb8.pdf
    • http://lifujeme.buddhismhotline.com/uploads/1/3/0/9/130969045/dogozikiru-kagodes.pdf
    • http://votepu.erinridgeaalhoa.com/uploads/1/3/0/7/130775971/6953890.pdf
    • https://cdn.shopify.com/s/files/1/0432/6821/0852/files/attorneys_fidelity_fund.pdf
    • https://cdn.shopify.com/s/files/1/0434/0364/0984/files/76764668401.pdf
    • https://cdn.shopify.com/s/files/1/0437/6598/9528/files/libro_base_de_datos_sql.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/prime_number_generator_python.pdf
    • https://cdn.shopify.com/s/files/1/0438/3830/8512/files/cambridge_medical_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/joxunedutivafet.pdf
    • https://cdn.shopify.com/s/files/1/0438/4463/2738/files/allahabad_university_llb_entrance_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0430/3283/8298/files/sogoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/2528/5798/files/zalexofijeluwovavupuso.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8573/files/81518665314.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3627/files/alef_bet_song.pdf
    • https://cdn.shopify.com/s/files/1/0435/7845/8275/files/xotiluzelesilejuduli.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdf
    • https://cdn.shopify.com/s/files/1/0435/6092/7393/files/pasteurization_of_fruit_juice.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pedarivorenali.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_off00009fda.bin
a4ff9d61c0b8e6aee2e4dae0c7b31927a3ba05a9f1682061bb7fe2d1f8a84027
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FDA 5236 bytes
font_01_sfnt_off0000b192.bin
897412a1311d49efd2fdd46bad179ec0b15648468878e5257b63f3c47b777b9b
pdf-font-stream PDF embedded font (sfnt) at offset 0xB192 10780 bytes