Malicious PDF — malware analysis report

Static analysis result for SHA-256 747ffa69bdbff783…

MALICIOUS

PDF

37.8 KB Created: 2020-04-23 03:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: cacfeac73df8ecd056c7d40e536ca7c4 SHA-1: 2347651d533b468ccb5b32db9b72d4c25139ed67 SHA-256: 747ffa69bdbff783c9567ccc741372274e84a627fbccfc849bb4206e42d4f87e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a deceptive purpose. The presence of 'SE_LOLBIN_RUN_COMMAND' indicates that the document likely contains instructions for executing system commands, potentially to download and run further malicious payloads. The primary IOCs are the numerous external URLs embedded within the document, which are likely used to redirect the user to malicious sites.

Heuristics 4

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://starrmark.net/uploads/1/3/0/3/130313363/130313363.html#blackboard+collaborate+linux
    • http://jedstream.com/uploads/1/3/0/7/130775892/b0c871.pdf
    • http://jerrodguillorycomedian.com/uploads/1/3/0/6/130620327/lotazujexugeg_jirog_kufibabunewogo.pdf
    • http://mindcoach.poker/uploads/1/3/0/6/130620380/mapejojiroxo-rojivixe-bovugizob-nuzuw.pdf
    • http://aplace4me.net/uploads/1/3/0/8/130814387/wedaviwer.pdf
    • http://rubicon-customs.com/uploads/1/3/0/4/130490719/nowom_vazofinatepok.pdf
    • http://relinemaintenance.com/uploads/1/3/0/6/130604699/0a05e9578d5ae.pdf
    • http://local9068.org/uploads/1/3/1/4/131438622/bugofifez.pdf
    • http://slantrobotics.com/uploads/1/3/0/7/130740524/81410.pdf
    • http://theropesproject.org/uploads/1/3/0/7/130739015/5251064.pdf
    • http://ciceroformation.com/uploads/1/3/0/5/130550814/puzak.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b4f.bin
d7dc30fdfe7b9238ae675ce2933cf5621e5890b8be772da1976b3f4fdb2a4bff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4F 8288 bytes

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