Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a6e303e1737d2fe…

MALICIOUS

PDF

39.5 KB Created: 2020-04-01 11:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 91210cc470bdec00d0339c09755b35ea SHA-1: 550edba54a2be8fe0aeafed174a635abebe4bb53 SHA-256: 4a6e303e1737d2fe9276939f51fa0ee75ff4955e413cfc30a2fab464f8f54156
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links pointing to external PDF files. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, suggesting a malicious intent to redirect users to potentially harmful content. The document body itself contains a mix of academic-sounding text and technical metadata, likely serving as a lure to encourage users to interact with the embedded links.

Heuristics 3

  • 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.
  • 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://heavensentlawnmanicurist.net/uploads/1/3/1/4/131408864/131408864.html#aplicacion+de+integrales+en+la+ingenieria+civil+ejemplos
    • http://tnknutson.com/uploads/1/3/0/3/130379237/gobubarusir.pdf
    • http://billysbeachhut.com/uploads/1/3/0/4/130483346/tudiviguwewu.pdf
    • http://escapetothesalon.com/uploads/1/3/0/6/130604635/ebc94be0.pdf
    • http://furdich.net/uploads/1/3/0/6/130605269/joperotawet_lamobisafen_nipowiwexutofe_datixotasize.pdf
    • http://students2019.us/uploads/1/3/0/5/130588393/mezisitugidedabawat.pdf
    • http://loudmountains.com/uploads/1/3/1/3/131380845/livawo.pdf
    • http://glamycam.com/uploads/1/3/0/6/130604248/lavunokamuzaf.pdf
    • http://maximemetalcreations.com/uploads/1/3/0/6/130604730/ed30661.pdf
    • http://www.succeed2serve.com/uploads/1/3/0/6/130621516/2076147.pdf
    • http://ftbk.net/uploads/1/3/0/7/130775519/ropokij.pdf
    • http://photolenka.com/uploads/1/3/0/4/130488157/nitogubur-rewepulufurume-wakaralov.pdf
    • http://florallane.com/uploads/1/3/0/4/130435638/6156759.pdf
    • http://bulletandco.com/uploads/1/3/0/8/130814209/c5f1c9852ba.pdf
    • http://learningdifferencesresourcegroup.org/uploads/1/3/0/9/130969139/posuguve.pdf
    • http://edinsolution.com/uploads/1/3/0/6/130605421/lefirevidojome-zozafibutoxo-nidisez.pdf
    • http://rapidotransportation.com/uploads/1/3/0/9/130969366/4d093cac39c1.pdf
    • http://dejaqtcuente.com/uploads/1/3/0/2/130272420/82623a88d9580.pdf
    • http://aeriefarm.net/uploads/1/3/0/6/130604518/0060d79.pdf
    • http://kaybeebizservices.com/uploads/1/3/0/7/130740414/joziru-wozitisoxunela-rubabalarox-wapaxopaw.pdf
    • http://hellokeshllc.com/uploads/1/3/0/6/130621859/sozagupepisamej_jogakoge.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_off00007191.bin
54177a2739d8fc78c8d5d411d2487f5f7d2273f75797dccf52d1757b2f25014c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7191 8452 bytes

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