Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d3724d5d226beea…

MALICIOUS

PDF

45.9 KB Created: 2020-08-21 21:21:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a9a1bc64322c7b8442a35a146bf0218 SHA-1: 5afd61881329c8df2ac886cdb813eae38559d4f6 SHA-256: 7d3724d5d226beea54c0059eb43eabd7ddc90604e4739fc648440f6cb6d6719d
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, with a critical heuristic firing indicating a link farm designed to redirect users. One of the primary links points to a known malicious redirector service, 'ttraff.cc'. The document body, though heavily obfuscated, also contains this redirector URL. The presence of numerous PDF links suggests an attempt to manipulate search engine results or distribute malicious content through a large, interconnected web of documents. No scripts were extracted, limiting the analysis of direct payload execution.

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.cc/pify?keyword=search+engine+optimization+process+pdf
    • http://vasonexu.jessethomascomics.com/uploads/1/3/2/6/132695839/dokaj.pdf
    • http://files.southsidebrewing.net/uploads/1/3/0/7/130739150/xiwuxovegaluva.pdf
    • http://fexeta.ruskranchorganics.com/uploads/1/3/0/7/130775519/e3cf8d4.pdf
    • http://zodadelul.the-soul-purpose.com/uploads/1/3/0/8/130814328/sikupifovuxewa.pdf
    • http://kuwus.shootacademy.co.uk/uploads/1/3/1/6/131607600/vawavilavolo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/picsart_background_4k_photos.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/besamanim.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/xobupokuwomina.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/72781188856.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/94900734621.pdf
    • https://cdn.shopify.com/s/files/1/0438/5030/1590/files/43966123292.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81603963226.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/atualizao_android_lg_k10_power.pdf
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/rilutubijemogejavijomowiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/1585/6550/files/zapedakovekisavilok.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_off00006612.bin
ea32c98bab3811610a7b1422d0887677ef5d7ec1b0dd369136493323c1b150fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x6612 5476 bytes
font_01_sfnt_off00007882.bin
c44e5550bf6d245a2730c79aa9c145355e185b778e79cf77d9bdd79fae265a21
pdf-font-stream PDF embedded font (sfnt) at offset 0x7882 10784 bytes
font_02_sfnt_off00009c8e.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C8E 4324 bytes