Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aec37e534465225…

MALICIOUS

PDF

45.5 KB Created: 2020-08-12 22:26:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4202a28e7c793c818102f0b2e8d4cb1a SHA-1: dcf54ba5d30ac8faff228f8a229bab3df7c747c0 SHA-256: 2aec37e5344652253a9f5d250676114c831925ade0150e66e9696da9726f2471
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.ru'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the primary malicious URL. 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.ru/pify?keyword=affirmative+negative+interrogative+exercises+pdf
    • http://files.olydemocrats.org/uploads/1/3/0/7/130775592/7446023.pdf
    • http://files.demitylaphotography.com/uploads/1/3/0/8/130874264/4481629.pdf
    • http://puxudexit.muckandgold.com/uploads/1/3/1/1/131164048/2416499.pdf
    • http://files.cameoimpressions.com/uploads/1/3/1/4/131482822/seteniv_ganajegemeped_jopagojajum.pdf
    • https://cdn.shopify.com/s/files/1/0436/0932/5730/files/50448374455.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94662163826.pdf
    • https://cdn.shopify.com/s/files/1/0450/8889/9224/files/61123434882.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/zepepovanotesewuravapazaz.pdf
    • https://cdn.shopify.com/s/files/1/0439/1282/2939/files/nanopam.pdf
    • https://cdn.shopify.com/s/files/1/0441/0084/5720/files/sample_of_fedex_air_waybill.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/rofidozol.pdf
    • https://cdn.shopify.com/s/files/1/0438/0983/3117/files/rutafefejilewoka.pdf
    • https://cdn.shopify.com/s/files/1/0432/6427/8686/files/aqua_unit_patrol_squad.pdf
    • https://cdn.shopify.com/s/files/1/0437/9482/5376/files/28394728945.pdf
    • https://cdn.shopify.com/s/files/1/0431/4441/3341/files/83233943718.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6330/files/52502338205.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/bending_stress.pdf
    • https://cdn.shopify.com/s/files/1/0440/2973/9173/files/57140314954.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e2d.bin
8a1ca8319460d4530a2b681829bb0db4c922f8127a3ccef9566b7710e0a8e401
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2D 5560 bytes
font_01_sfnt_off00007100.bin
43d6ac63be483fa53f4b116c78378ba24b41bd4d6ee5cb6bcbbec7fdf39e9b4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7100 10164 bytes
font_02_sfnt_off000093e7.bin
bc204826b4a8e89d94c6b451048e0ee4769fbbcf877f688c94b05cbabb688319
pdf-font-stream PDF embedded font (sfnt) at offset 0x93E7 16064 bytes