Malicious PDF — malware analysis report

Static analysis result for SHA-256 e11144841e50668e…

MALICIOUS

PDF

39.3 KB Created: 2020-08-18 22:21:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6261dc99712b4ff0daa7ab2dd4a1a39 SHA-1: 6ae77b7277af2605ec94f14854429cb1390d6c83 SHA-256: e11144841e50668e5cc25504b66bceca1989fde1cb3b14b353ac4e2591806bf4
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which points to 'https://ttraff.ru/pify?keyword=bionaire+bap9240-+iuk+air+purifier+manual'. This URL is designed to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through a deceptive document.

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=bionaire+bap9240-+iuk+air+purifier+manual
    • http://files.vallemagica.com/uploads/1/3/2/7/132710779/tofotora_pofav_gatiregilanu.pdf
    • http://files.peggyshobbies.com/uploads/1/3/0/8/130874326/82332.pdf
    • http://vonugetux.johnwesleymillercompanies.com/uploads/1/3/1/0/131071157/nepoxajusepowugasini.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/bawikelupabixizapa.pdf
    • https://cdn.shopify.com/s/files/1/0437/9197/4549/files/calculus_early_transcendentals_stewart_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0448/3465/2321/files/divodiwuvog.pdf
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/19058644311.pdf
    • https://cdn.shopify.com/s/files/1/0431/4660/8794/files/luminar_2018_for_windows_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/7441/0901/files/21439747952.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/57020315659.pdf
    • https://cdn.shopify.com/s/files/1/0431/3058/5250/files/dsm_iv_casebook.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/62146544584.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/free_monthly_budget_planner.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/fikugofona.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/this_copy_of_windows_is_not_genuine.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_off00004bf3.bin
3fec0f3b8585a163a597ec60d0f22465bde25e63736415330b39cc9126de7786
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF3 5472 bytes
font_01_sfnt_off00005e73.bin
87ea972d4de28b0c042d43beaf0d1e4c2571fcb5dec43132dc11ed443e333a6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E73 10520 bytes
font_02_sfnt_off00008246.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8246 4324 bytes