Malicious PDF — malware analysis report

Static analysis result for SHA-256 fecc095c5bf5df9a…

MALICIOUS

PDF

44.8 KB Created: 2020-08-13 15:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20855ba233d9837faf707772ea140d2a SHA-1: ce27a0a45b7ada7763bffcdd156fdf2c3282e45c SHA-256: fecc095c5bf5df9ad3bf6ff1280bcd7e1d2b3d1ac0987214a1abfe8f4730bb1d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link to 'ttraff.com'. Another critical heuristic indicates a PDF link farm, suggesting an attempt to distribute or obscure malicious content. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF links, reinforcing the lure. The presence of a 'download button' heuristic further supports the attack pattern of tricking users into clicking malicious links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=anglishtja+pa+mesues+pdf
    • http://files.karazhang.com/uploads/1/3/2/6/132683224/2af13d014f.pdf
    • http://files.monkeysbnb.com/uploads/1/3/1/3/131398424/2272506.pdf
    • http://files.kitchendesigncentersr.com/uploads/1/3/1/1/131164387/5571486.pdf
    • https://cdn.shopify.com/s/files/1/0432/7368/3112/files/pobarodaboko.pdf
    • https://cdn.shopify.com/s/files/1/0454/7041/7046/files/573619270.pdf
    • https://cdn.shopify.com/s/files/1/0436/7784/3609/files/biochemical_characterization_of_bacteria.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1860/files/15661115956.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9673/files/65341454724.pdf
    • https://cdn.shopify.com/s/files/1/0432/3737/6157/files/fibenunenafajijufon.pdf
    • https://cdn.shopify.com/s/files/1/0429/6163/3439/files/fugaridowo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7805/0201/files/82190580226.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/77249186903.pdf
    • https://cdn.shopify.com/s/files/1/0431/5919/1706/files/xazewabedojiwatinelejalew.pdf
    • https://cdn.shopify.com/s/files/1/0430/9303/3111/files/ed_99_98_ec_9c_a8.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/99656938243.pdf
    • https://cdn.shopify.com/s/files/1/0431/1026/9085/files/27974230987.pdf
    • https://cdn.shopify.com/s/files/1/0428/4763/3575/files/peter_lynch_beating_the_street_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/nurunetoviguzalokepowuriw.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_off00006eec.bin
b2287d92963af5b012fc92f9e622ed8120ea35c5f8a9e7ca200c35a8f7a7d166
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEC 5424 bytes
font_01_sfnt_off00008140.bin
d1cefd501cec1719cb25e76e3478f81b669d61a76cbb695a3e0e135296a71bd2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8140 10940 bytes