Malicious PDF — malware analysis report

Static analysis result for SHA-256 7555908e23bb1cc2…

MALICIOUS

PDF

72.7 KB Created: 2021-09-16 09:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: de559522edbb216aa20304edfa95896d SHA-1: 01388b9d5de1db870efdf2b1424c634ee2997b85 SHA-256: 7555908e23bb1cc235d63a48ad6d0668c82df9e91c4f68b75f4eddd7b4b2d244
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites and disposable hosting. One URL specifically mentions 'metasploit android exploit commands', suggesting a phishing or exploit delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6691

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://drafthe.ru/uplcv?utm_term=metasploit+android+exploit+commands PDF link annotation
    • http://gianenricofabro.com/userfiles/files/18291450764.pdfIn PDF document text
    • http://euromarkcreations.com/new/fck_img/file/80086364864.pdfIn PDF document text
    • http://www.ondebiz.com/userfiles/file/70198861342.pdfIn PDF document text
    • https://charteriraq.ir/basefile/charteriraqir/files/zatisigetodalug.pdfIn PDF document text
    • http://allineers.morefriendship.com/upload/files/53387370669.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f302e08095---polutavefibetir.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/dc0ed7f88a6b5a5979978b611b781ec8/jeduwajal.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613436162b223---5894535530.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613e514aac4f9---kodiziruxulebuvireto.pdfIn PDF document text
    • https://artistprasanna.com/userfiles/file/7277086491.pdfIn PDF document text
    • https://arch.ua/ckfinder/userfiles/files/63577925498.pdfIn PDF document text
    • http://kxqcgs.net/filespath/files/20210910110612.pdfIn PDF document text
    • http://cuboni.com/uploadfile/hong202109060633223865.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/14e26a772cd4ba7275f91df77d4c3038/niduwupof.pdfIn PDF document text
    • http://www.jasfec.com/imgs/uploads/53637507607.pdfIn PDF document text
    • http://111-orte.com/testarea/cwsCMSlight/media/files/xazovirojizas.pdfIn PDF document text
    • http://falegnameriacastiglione.it/userfiles/files/88981875304.pdfIn PDF document text
    • http://catherine-massage.com/ckfinder/userfiles/files/58249702229.pdfIn PDF document text
    • http://betonkeritesek.eu/Content/files/xexavebuxuputewesakujokok.pdfIn PDF document text
    • https://birutelorasin.com/contents/files/88931696345.pdfIn PDF document text
    • http://xn----7sbbgprpk7biiq.xn--p1ai/admin/ckfinder/userfiles/files/32247199584.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/llfrne4qg08a7k3fo6tleesgmr/96153459716.pdfIn PDF document text
    • https://matfreklam.com/calisma2/files/uploads/nepisetosu.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE664 19192 bytes
SHA-256: ee6ba7a3a8e6973324a30c228ccab0e1c6626fcbf7a59a0981b3473c52fc7e53

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