Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b940d0968436341…

MALICIOUS

PDF

44.5 KB Created: 2020-08-19 10:43:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57e5e96ced921de3609be8651b8cec05 SHA-1: ce4f0f178080784662d3763f327c66bf7e0c641e SHA-256: 2b940d0968436341e2fc96c64796d296d12845f27b7271daf6e8e15d6d28aae8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=analyzing+data+worksheet+pdf'. Additionally, it features a PDF link farm with numerous external links, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute content. The document body, though heavily obfuscated, contains the same malicious URL and benign-looking PDF links, reinforcing the lure. 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=analyzing+data+worksheet+pdf
    • http://pinip.masterautolift.com/uploads/1/3/0/8/130814328/begalipoper-solobisugata.pdf
    • http://files.northernbeachescleanupcrew.com/uploads/1/3/1/3/131380128/sepotifaluruwax.pdf
    • http://joxate.topspotfruitmart.com.au/uploads/1/3/1/4/131482933/7640142.pdf
    • http://files.lucasmusicacademy.com/uploads/1/3/0/7/130738805/7928943.pdf
    • https://cdn.shopify.com/s/files/1/0433/0582/8520/files/present_perfect_past_simple_exercises_pre_intermediate.pdf
    • https://cdn.shopify.com/s/files/1/0435/0840/0280/files/x22_report_you_tube.pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/beautiful_creatures_2_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/1678/0951/files/75537066086.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/14390246394.pdf
    • https://cdn.shopify.com/s/files/1/0439/9942/8766/files/44733013290.pdf
    • https://cdn.shopify.com/s/files/1/0447/8438/6199/files/signo_de_lasegue_y_bragard.pdf
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/giredesupow.pdf
    • https://cdn.shopify.com/s/files/1/0438/6249/1286/files/70804391382.pdf
    • https://cdn.shopify.com/s/files/1/0435/5126/0836/files/niliban.pdf
    • https://cdn.shopify.com/s/files/1/0437/8873/0525/files/15753872444.pdf
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/99102567007.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/chemistry_project_on_casein_in_milk.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_off00006e57.bin
dce6396f8c79edea770897fcf04a9865e5cf79abbc5da1fea8f8bc594feca938
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E57 5600 bytes
font_01_sfnt_off0000817d.bin
825a829016f2d0bc1621967cc8167d6d631b4e93eab71d8d1fa558c2ecd2f843
pdf-font-stream PDF embedded font (sfnt) at offset 0x817D 10264 bytes