Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1bf2cb9d5fa4cc…

MALICIOUS

PDF

33.2 KB Created: 2020-09-07 10:15:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9588c06560ce88e504d607b6f64b44df SHA-1: e15a884803827d5f616056b7ccfc73f491d62240 SHA-256: 2f1bf2cb9d5fa4cc0d001d160d3b680af6ffc5c1b81fccc46d3f01fd11a0ae4d
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=type%2527+ireportservercredentials+is+not+defined'. This URL is likely intended to exploit the user by presenting a fake JavaScript error, luring them into a malicious site. The document also contains a PDF link farm heuristic, with many links hosted on Shopify, though most appear benign. 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.club/wix?keyword=type%2527+ireportservercredentials+is+not+defined
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/pixokagewodovijigote.pdf
    • https://cdn.shopify.com/s/files/1/0436/2777/4115/files/77484240611.pdf
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/77331849634.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/nogunaretobababakota.pdf
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/zoriwofipisajewadupesovek.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6773/files/vomewekudokagomuzamakof.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/8038289755.pdf
    • https://cdn.shopify.com/s/files/1/0431/6525/3789/files/boston_legal_season_1_episode_1.pdf
    • https://cdn.shopify.com/s/files/1/0440/0224/6814/files/bestie_selfie_camera_app.pdf
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/pesoxaxotubaxuposibet.pdf
    • https://cdn.shopify.com/s/files/1/0429/9613/8137/files/90452688217.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/matura_angielski_poziom_rozszerzony.pdf
    • https://cdn.shopify.com/s/files/1/0434/3096/9511/files/77340875578.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_off00004421.bin
cc9d36ac81e95cd813775cb407ee350e5063b92a9bf437988ed423b2296ff7f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4421 5292 bytes
font_01_sfnt_off00005646.bin
726e19c2a821b986a4f2056b997c2ed866b9e2193be6f45425c4ab3873564692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5646 9732 bytes

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