Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a1806048ccc502a…

MALICIOUS

PDF

45.4 KB Created: 2020-08-18 17:24:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e7a05c79e956977d64191736243e492 SHA-1: f8c536571718b100a12f0479d6020b00ded28e18 SHA-256: 3a1806048ccc502acd446e9f558fcbde2fc9e062dbb9f849f1841cd1b616efac
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'recurring deposit in sbi interest rate sheet' and a URL that appears to be part of a link farm, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary malicious URL is ttraff.com, which is used to redirect the user to further malicious content.

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.com/pify?keyword=recurring+deposit+in+sbi+interest+rate+sheet
    • http://nonili.sweetdreamseveryday.com/uploads/1/3/2/7/132712354/5789401.pdf
    • http://files.workwithpaula.com/uploads/1/3/0/7/130738914/lejuwoxi-nefezifobodola-gogip-lovon.pdf
    • http://lozuz.rosesrntred.com/uploads/1/3/0/9/130969060/df0ec1.pdf
    • https://cdn.shopify.com/s/files/1/0435/0771/2155/files/vadotesidexebirenora.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2734/files/42140333050.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38664456414.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2053/files/guropufigasaluwe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5404/7137/files/8859443325.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/22829883206.pdf
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/73672126141.pdf
    • https://cdn.shopify.com/s/files/1/0444/6945/2967/files/spider_man_theme_song_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/16333248367.pdf
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/jidutegaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.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/
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/22829883206.pd

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007307.bin
dca359108223dca96ceb1ea2226304f312678ff6257a19bf388b6fcaf09c2095		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7307 5448 bytes
font_01_sfnt_off0000857f.bin
db3b9ccb881bbaa9285365c4b07709711802c287a35234adf85145e3517289bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x857F 10132 bytes

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