Malicious PDF — malware analysis report

Static analysis result for SHA-256 f110ba5e22bba76b…

MALICIOUS

PDF

46.2 KB Created: 2020-08-18 17:10:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: beec098f79eb71816f307546ac1da4ac SHA-1: 64797cc7b45b92844ba8412318e4289192a53332 SHA-256: f110ba5e22bba76b47457d73ff99fb92c305ba1c4a94aa056088018afbc2033b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.ru, which is presented in the context of a poker app. The document also functions as a link farm, pointing to numerous other PDFs hosted on Shopify. This suggests a campaign focused on driving traffic to malicious sites, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=adda52+poker+app
    • http://butod.cubiclesmadenew.com/uploads/1/3/1/1/131164250/vegovesuwo.pdf
    • http://files.appalachianaxeworks.com/uploads/1/3/2/6/132683165/7d745bd5088.pdf
    • https://cdn.shopify.com/s/files/1/0437/5783/0298/files/23571250404.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8117/files/79624118337.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/wajawejojivomojaj.pdf
    • https://cdn.shopify.com/s/files/1/0440/3465/4358/files/editable_debit_card_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/8860/0478/files/fozix.pdf
    • https://cdn.shopify.com/s/files/1/0436/5425/0654/files/25766283253.pdf
    • https://cdn.shopify.com/s/files/1/0438/5089/1424/files/adding_fractions_with_like_and_unlike_denominators.pdf
    • https://cdn.shopify.com/s/files/1/0432/6726/0576/files/avast_removal_tool.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/aqa_sociology_a_level_revision_guide_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/4341/3407/files/foxoniga.pdf
    • https://cdn.shopify.com/s/files/1/0436/4559/9904/files/94526980035.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66691602327.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062db.bin
282561e44442e4ede93e206776fb9b66c31534d55dc2264d25df2a6688f2d065		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62DB 5052 bytes
font_01_sfnt_off00007425.bin
d866ec5e171df5405f3f6b932b46538f9b51ace26c5b6f324da71fbf4b2694df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7425 10072 bytes
font_02_sfnt_off000096ce.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96CE 16164 bytes

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