Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2115559b4db68c9…

MALICIOUS

PDF

38.1 KB Created: 2020-03-17 11:32:05 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8c4f31745d97f5fcc0b526d66f1a5dd8 SHA-1: 132cbd86ac0fdcfb7623b2cd6dd99ec5cb9b7c5f SHA-256: b2115559b4db68c9998428cc2575ecec6d7ad1564c210abb3fa6f046521bf98c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1218.011 System Binary Proxy Execution: Rundll32 T1218.010 System Binary Proxy Execution: Regsvr32 T1218.005 System Binary Proxy Execution: Mshta

The PDF contains a large number of external links, many pointing to other PDF files, indicative of a link farm or SEO poisoning tactic. The presence of a 'Visible LOLBin command execution instruction' heuristic suggests that the document may contain embedded commands or scripts designed to execute malicious payloads via tools like PowerShell, mshta, rundll32, or regsvr32. The document body itself contains text related to 'database modeling and design' and URLs, reinforcing the lure to external content.

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://mcmglobalportal.org/uploads/1/3/0/8/130814062/130814062.html#database+modeling+and+design+logical+design+5th+edition+pdf+free
    • http://www.paintitaway.com/uploads/1/3/1/0/131070571/6548429.pdf
    • http://mastindelospirineos.com/uploads/1/3/0/8/130814675/wokulo_jisuk_razumukowaz_voxizerike.pdf
    • http://nastranskincare.net/uploads/1/3/0/5/130590241/1732583.pdf
    • http://www.trainedinbritain.com/uploads/1/3/0/5/130540507/4224482.pdf
    • http://s-p-q.org/uploads/1/3/0/4/130488513/6188913.pdf
    • http://riccijustisart.com/uploads/1/3/0/6/130604775/e1823.pdf
    • http://trendysays.com/uploads/1/3/0/6/130604610/2a33ff2800cbf.pdf
    • http://jgtorresenterprises.com/uploads/1/3/0/5/130538986/6625270.pdf
    • http://schoolnutritionmenu.com/uploads/1/3/0/8/130813429/kokurobefigemifug.pdf
    • http://128lumber.com/uploads/1/3/0/4/130489090/651579.pdf
    • http://www.marilynmonroelegacy.com/uploads/1/3/0/2/130289460/majiza.pdf
    • http://twistingtrailsandtales.com/uploads/1/3/0/7/130738894/d6d25b83fe33.pdf
    • http://lenka-photography.com/uploads/1/3/0/5/130540118/dec6de5556b9a.pdf
    • http://kinrosscurlingtrust.org/uploads/1/3/0/4/130476499/zubamifutoluvob.pdf
    • http://kgncastings.com/uploads/1/3/0/7/130739344/6954169.pdf
    • http://tristanandrachel.com/uploads/1/3/0/9/130969481/gilixutogopisiweko.pdf
    • http://theurbanmarketsd.com/uploads/1/3/0/6/130604564/rexifizenovaku.pdf
    • http://anabarragan.com/uploads/1/3/0/5/130539702/02d89906251.pdf
    • http://oncitynow.com/uploads/1/3/0/6/130605369/c307c6.pdf
    • http://sisk-security.com/uploads/1/3/0/7/130776895/medutu.pdf
    • http://www.smartenergychicago.com/uploads/1/3/0/7/130740455/dosabepozoxopod-josaxaze-xifunodubolirem-zuxanigewumizo.pdf
    • http://miguelsanostory.com/uploads/1/3/0/5/130588605/1623966.pdf
    • http://michelevevang.com/uploads/1/3/0/6/130622103/fefabetejelavolipuno.pdf
    • http://www.juliemdesigns.com/uploads/1/3/0/9/130969327/pedizufo_matiririxajib_jazivumuj.pdf
    • http://michelevevang.com/uploads/1/3/0/6/130622103/fefabetejelavolipuno.pd
    • 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_off00006c51.bin
226a9020298048c18d8e56c0cf1f5e1e7d6d1f84416826e5626154f4de4ddd11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C51 7620 bytes

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