Malicious PDF — malware analysis report

Static analysis result for SHA-256 c09bd0ec8548ac98…

MALICIOUS

PDF

33.1 KB Created: 2020-08-24 23:29:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42612be551d350f4f4e82d6541890afe SHA-1: a857563b0d7ba28b8b455f4605ebf169ffaf654b SHA-256: c09bd0ec8548ac9858542bcd4561f006b2c3018d3821a01f963f336dee97a3ad
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary intent appears to be luring the user to a malicious site, likely for further exploitation or credential harvesting.

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=assamese+song+ringtone+free
    • http://files.stmarknola.org/uploads/1/3/1/0/131071063/4202107.pdf
    • http://giwel.greenlawconstruction.com/uploads/1/3/0/7/130738615/5690956.pdf
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/fatasilama.pdf
    • https://cdn.shopify.com/s/files/1/0437/8116/1111/files/vuxekopisujidasidagaxaz.pdf
    • https://cdn.shopify.com/s/files/1/0440/1856/5278/files/el_poder_de_la_kabbalah_libro_completo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/pokavasijunezavajivum.pdf
    • https://cdn.shopify.com/s/files/1/0438/3798/0834/files/42147200490.pdf
    • https://cdn.shopify.com/s/files/1/0437/0399/2474/files/ruvedusunolufij.pdf
    • https://cdn.shopify.com/s/files/1/0433/5314/5495/files/oregon_coast_guided_fishing_trips.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/alhagi_maurorum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8364/files/english_words_without_vowels_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/41027715802.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/murelawozotazuvup.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_off00004629.bin
05e5619265f607d36168fe7e74c6926422879a5c9e5136257f3f96131b6d4269		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4629 5044 bytes
font_01_sfnt_off00005737.bin
d6e3810e282354083a32733bca271ce2f0fca7aabb594430940d99ffe6f631ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5737 9556 bytes

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