Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1bad920e89bcd81…

MALICIOUS

PDF

45.4 KB Created: 2020-08-19 13:21:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2f4e50840aa5a452b21f8706fcd25a6 SHA-1: 128744243c7ddac23e781123c5ea23f442374b6b SHA-256: b1bad920e89bcd814f5eba601e808f83dce1d1b247ffe23fe4c3441b9d3dbd97
130 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.ru/pify?keyword=animal+4d+pro+apk'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains references to the malicious redirector URL and a benign-looking PDF file hosted on Shopify, suggesting a lure to download potentially malicious content.

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.ru/pify?keyword=animal+4d+pro+apk
    • http://nuwupeve.matthewthorburn.net/uploads/1/3/0/7/130775320/f4b3f.pdf
    • http://tixaw.tssparking.com/uploads/1/3/1/4/131454029/53dc3cb8.pdf
    • http://rulaw.coalcreeksoapery.com/uploads/1/3/1/4/131438137/detiziwadibazojil.pdf
    • http://files.thedetroitanthropologygroup.com/uploads/1/3/1/4/131482881/3952417.pdf
    • https://cdn.shopify.com/s/files/1/0428/6880/1702/files/bejonobifabatagajigikuzid.pdf
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/31632779214.pdf
    • https://cdn.shopify.com/s/files/1/0436/5107/2158/files/wosavuxeru.pdf
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/ecologia_impactos_ambientais.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/95327564722.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8281/files/21245270972.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3397/files/5887429289.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/gakuro.pdf
    • https://cdn.shopify.com/s/files/1/0431/2324/5216/files/aliran_marxisme.pdf
    • https://cdn.shopify.com/s/files/1/0436/0713/0270/files/14366247722.pdf
    • https://cdn.shopify.com/s/files/1/0434/2356/3925/files/59417375628.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/26512844574.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_off00006b7a.bin
8171c7eeffca694b3fbdf00b4cad1c9e64f269222f347f0ef9180416ab5ed430
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7A 5068 bytes
font_01_sfnt_off00007c9c.bin
41ce702c357721076987b14327cf58dd455e192943feb332264a71084d761a99
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9C 13932 bytes