Malicious PDF — malware analysis report

Static analysis result for SHA-256 c72a358fc0a55574…

MALICIOUS

PDF

39.1 KB Created: 2020-08-29 02:29:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 454e36d4d8a348affda7b6b967721609 SHA-1: 7816e2dd5b87e5ad2c3ed32a35a69a41bb98572f SHA-256: c72a358fc0a555741b9d7fdbf69a2c41ecfc6dcab8e0551b03562ea72425494c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being a Shopify URL. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent. The file's purpose appears to be to direct users to malicious sites through these embedded links.

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/wix?keyword=himno+agrarista+letra
    • https://cdn.shopify.com/s/files/1/0446/4774/3651/files/look_at_me_now_lyrics_clean.pdf
    • https://cdn.shopify.com/s/files/1/0432/5215/4532/files/materialismo_dialectico_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0429/5078/7231/files/ditavamerosajewe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4563/3691/files/36676577414.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2524/files/5735496098.pdf
    • https://cdn.shopify.com/s/files/1/0436/8619/9461/files/86393029587.pdf
    • https://cdn.shopify.com/s/files/1/0430/7556/7770/files/fairmont_west_virginia_weather_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4312/files/sidujopumazakenoxotazuvi.pdf
    • https://cdn.shopify.com/s/files/1/0440/6847/0936/files/23307850581.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/72841123494.pdf
    • https://cdn.shopify.com/s/files/1/0429/7805/0201/files/tofagixobuwil.pdf
    • https://cdn.shopify.com/s/files/1/0439/2707/7032/files/lately_stevie_wonder_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0435/8347/1771/files/2018_fifa_world_cup_schedule.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_off00005cfc.bin
d8560ad6ae3a86912565bca0a38779ec7f22539b5ea3cb29140843efa600d690		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFC 4968 bytes
font_01_sfnt_off00006dbb.bin
2d7cb6755548cd17dc269e35ecf19111079191d3f490c47ea75b7ba930548de9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBB 10024 bytes

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