Malicious PDF — malware analysis report

Static analysis result for SHA-256 8264518b3570e04d…

MALICIOUS

PDF

40.6 KB Created: 2020-08-19 21:58:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e30cbafb6a19b07474fe8981285edfee SHA-1: 39d8504176f5c2c32be8cdf1fa385ca4132801d3 SHA-256: 8264518b3570e04db9668fc38237d42047723e0fadc296f67a9351740be5bdfd
130 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.cc/pify?keyword=best+internet+er+for+android'. Another heuristic indicates a PDF link farm, with the first URL being 'https://cdn.shopify.com/s/files/1/0432/6329/5654/files/boulevard_of_broken_dreams_piano.pdf'. The document body also contains a call-to-action phrase, suggesting a lure to click these links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=best+internet+er+for+android
    • http://files.patriksoderstam.com/uploads/1/3/0/7/130776790/sumawelabofowoje.pdf
    • http://seriwe.huffmansflowersofthefield.com/uploads/1/3/0/7/130739892/jopegutoro.pdf
    • https://cdn.shopify.com/s/files/1/0432/6329/5654/files/boulevard_of_broken_dreams_piano.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2818/files/49433053847.pdf
    • https://cdn.shopify.com/s/files/1/0430/9919/3501/files/xegavufo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4689/3730/files/91915524418.pdf
    • https://cdn.shopify.com/s/files/1/0435/4038/1855/files/traditional_border_design_vector_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/7048/8730/files/74922915143.pdf
    • https://cdn.shopify.com/s/files/1/0435/8393/0527/files/air_pollution_pictures_and_information.pdf
    • https://cdn.shopify.com/s/files/1/0455/3352/8229/files/felenemadasal.pdf
    • https://cdn.shopify.com/s/files/1/0429/6451/7023/files/langman_s_medical_embryology_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3579/5354/files/maponudilefede.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_off00006103.bin
975266e4d0f29a49c61daa8ea67167d778d09eca4f2fcfe301313078cf7ade51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6103 4916 bytes
font_01_sfnt_off000071c2.bin
aca2148e5f8e4779dd3e60cfaf0980e253dfafd1b2e3987a6d9b60aaff0119e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71C2 10512 bytes

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