Malicious PDF — malware analysis report

Static analysis result for SHA-256 37cc9040e28d9274…

MALICIOUS

PDF

31.9 KB Created: 2020-08-22 15:58:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 718dc01393dc13e4cfcfeb0d93b856ec SHA-1: dd0af769fcfc348ab9c592ecc3064634d5aac9ac SHA-256: 37cc9040e28d92746b5aea9558cbd2ca2611dfc4c9e1a80c5bb8e8d5fe80ee5f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains references to the '2016 super duty towing guide' and the wkhtmltopdf tool, suggesting a lure document. The presence of numerous Shopify-hosted PDF links indicates a link farm designed to distribute malicious content or phish users. The primary attack pattern involves redirecting users to malicious infrastructure.

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=2016+super+duty+towing+guide
    • http://files.transitionsthoroughbreds.org/uploads/1/3/1/1/131164112/b19f0.pdf
    • http://jatejoduz.theeherbdoc.com/uploads/1/3/0/7/130775997/18db9325.pdf
    • http://files.intheblinkofaneyejewelry.com/uploads/1/3/0/7/130739016/zanarenetezenivo.pdf
    • http://kazofivad.ipersian.org/uploads/1/3/1/3/131384169/4017700.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdf
    • https://cdn.shopify.com/s/files/1/0429/5580/0739/files/75120141108.pdf
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/sudorugigesimigewixuro.pdf
    • https://cdn.shopify.com/s/files/1/0431/1056/4002/files/76479801787.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/pezusorila.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vakijuxek.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/sopejutubanubuza.pdf
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/w9_for_nonprofit.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/97490647397.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_off000041fa.bin
e5c11015fbbe7307eb5eefb99a6b38dfee9823f3022e91c7dd1c0a3f5ab4d3b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x41FA 5464 bytes
font_01_sfnt_off000054bf.bin
9878350d6475f65790f369f728f5f708fe6a2392ec3621ef087afa2b3322d90c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54BF 8864 bytes

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