Malicious PDF — malware analysis report

Static analysis result for SHA-256 f84591590619c2f1…

MALICIOUS

PDF

39.2 KB Created: 2020-08-10 12:08:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3da2c0b748ceeef4b26154f0cdc602e8 SHA-1: 6d33663c36d0f1064ac8ee9bfbd6420bd9d981de SHA-256: f84591590619c2f1467b790f6a399944bd1a4d8594c8e9e5da5a380e15f93673
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but also includes a critical link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=the+barefoot+investor+for+families+pdf+free'. This suggests the document is part of a link farm or SEO manipulation scheme designed to drive traffic to malicious infrastructure. 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=the+barefoot+investor+for+families+pdf+free
    • http://files.drtaoka.com/uploads/1/3/1/1/131163832/mojutaxinudolurijozi.pdf
    • http://lekesalu.yorktownlionsclub.com/uploads/1/3/0/7/130738531/votevuz-surakiwon.pdf
    • http://files.deliveranceforchristians.com/uploads/1/3/1/1/131164462/674bc0e58ae8.pdf
    • http://sivubod.unbridled-photography.com/uploads/1/3/0/7/130739826/751c5bf15b0b6be.pdf
    • http://files.grandmaceilshouse.com/uploads/1/3/1/4/131408529/92347f03614c5.pdf
    • https://cdn.shopify.com/s/files/1/0440/0496/6565/files/81139501021.pdf
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/xokotajedepobuzibazav.pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/57990411472.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/9226322584.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3183641906.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/3129941563.pdf
    • https://cdn.shopify.com/s/files/1/0429/7228/3033/files/13462429308.pdf
    • https://cdn.shopify.com/s/files/1/0440/3573/5717/files/miwoledejov.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/22156574315.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/jakakix.pdf
    • https://cdn.shopify.com/s/files/1/0435/0948/1624/files/pajenuvuvog.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_off00005a95.bin
f7b9564aedcee1ddc8675c5dae20f66d32eef1aa2c27202d68a7f7d3f03f61fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A95 5428 bytes
font_01_sfnt_off00006ce0.bin
f2ac3311eb55131c52b3cdb104fe96d7f8bc40d7cd42645d7d0badf2cd65ef4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE0 10252 bytes

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