Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4d4d77bf2781adf…

MALICIOUS

PDF

48.4 KB Created: 2020-08-02 08:15:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68385ab0cc526c21922431642e151ca6 SHA-1: 7b340798f6458be31580efb80cf6c08348cc48af SHA-256: d4d4d77bf2781adfeeafe00c4ccbe89758ac7a8a4944b861ceb84c14ce2d191b
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious infrastructure, disguised as a technical guide. The primary malicious URL, ttraff.com, is flagged as a redirector. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking PDF files hosted on Shopify, likely to appear legitimate. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a malicious redirector.

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=ubuntu+14.+04+install+nvidia+drivers
    • http://files.jancancan.com/uploads/1/3/1/4/131406413/sosazidisajawaj-ledosol-vaxodavuv-ziwobedomanefon.pdf
    • http://files.stevenhoy.com/uploads/1/3/0/8/130813818/merexodav.pdf
    • http://files.feddestudios.com/uploads/1/3/0/7/130776407/4303366.pdf
    • http://files.sisterspiritwomensharingspirituality.org/uploads/1/3/2/8/132815154/58853863.pdf
    • http://files.streathamsociety.org.uk/uploads/1/3/1/0/131071258/6341c1b76951.pdf
    • https://cdn.shopify.com/s/files/1/0428/5428/5479/files/suicide_squad_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35031547028.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0069/files/nilelevikibopizulapuxosot.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66923604261.pdf
    • https://cdn.shopify.com/s/files/1/0429/2316/3801/files/51537675880.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/45096814723.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/87457179811.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdf
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/92854242654.pdf
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/lapemawusejewezib.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_off00007ad5.bin
f8f436862fa80d52dbc8d34a75d9bc43a736edba62613652519f167bc4d8d8da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD5 5324 bytes
font_01_sfnt_off00008d0c.bin
8d14a21a5093c20e9680b2138518e0ddd552a7909fa6f1fb3d492b96724d6b38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0C 11864 bytes

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