Malicious PDF — malware analysis report

Static analysis result for SHA-256 5805160d959e982a…

MALICIOUS

PDF

64.0 KB Created: 2020-08-03 19:25:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbea98b21586fc244c7308589a8bd01f SHA-1: 9b7a46168e3e70d576eb17cf723b64b37ae7fa06 SHA-256: 5805160d959e982a2652ba8133304e45917c4a282668789d62ec7397321841ec
160 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The presence of a 'LOLBin run command' heuristic suggests that the document may also contain instructions or embedded scripts that leverage Windows execution tools to further the malicious activity. The primary goal appears to be redirecting users to malicious sites, likely for phishing or malware distribution.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=arithmetic+coding+pdf
    • http://files.appalachian-auditorium.org/uploads/1/3/1/4/131410812/8850719.pdf
    • http://files.gcmdazzlers.com/uploads/1/3/0/8/130874163/bexipazevoro.pdf
    • http://files.janrobertson.org/uploads/1/3/0/7/130739309/benixugoxupu_pimonun_muvalipasusi_kadawevove.pdf
    • http://temisobi.karencougan.com/uploads/1/3/1/1/131163658/tozopibebixetax-bafete.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/fozepinejixizakiba.pdf
    • https://cdn.shopify.com/s/files/1/0437/4921/2309/files/36691457247.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/vawotifomakorig.pdf
    • https://cdn.shopify.com/s/files/1/0428/0044/7655/files/58624080743.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/ponoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/nuzap.pdf
    • https://cdn.shopify.com/s/files/1/0431/7727/9652/files/python_garage_door_opener.pdf
    • https://cdn.shopify.com/s/files/1/0430/0495/2735/files/76057557447.pdf
    • https://cdn.shopify.com/s/files/1/0433/3197/7369/files/manual_tire_changing_machine.pdf
    • https://cdn.shopify.com/s/files/1/0434/4997/4946/files/discord_text_formating.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/dizenebekukigenitabi.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_off0000a5cc.bin
ce4c81c34ba8927a320c87afd4c7726d120c94bd3bd254d268024da0407fd1c8
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5CC 5140 bytes
font_01_sfnt_off0000b725.bin
3b587c6dfd5a62fa82570cd525cd126371480cb4de8e09897810000b12f6044d
pdf-font-stream PDF embedded font (sfnt) at offset 0xB725 11248 bytes
font_02_sfnt_off0000dd9d.bin
e15b17d067faee8d9d79ab7b11bdf812c29390801b8b072a333d2418826f0db9
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD9D 16116 bytes