Malicious PDF — malware analysis report

Static analysis result for SHA-256 78647dae27c9b672…

MALICIOUS

PDF

83.2 KB Created: 2021-06-13 08:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6217886476d391a8e815230a58d07501 SHA-1: 97f94aaa144ab32eae701eb57161d009b18ff189 SHA-256: 78647dae27c9b6729d63359de503d6c3b7dd34d107fe166a1c1ef9e35dceaca6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The presence of a 'Minecraft aim trainer' lure in the document body, combined with the ML classifier and ClamAV detection, strongly indicates malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7503

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://smidgel.ru/uplcv?utm_term=minecraft+aim+trainer
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075240c52048---betagafop.pdf
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/c0iovcg9jqba44psmt92cspr9v/35897016364.pdf
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ade09388488---93660055644.pdf
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/r5bdvgq6c8sa52lgsa3f8q2ts3/tezeroniwa.pdf
    • http://mfahk.com/upload/files/68061570406.pdf
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/24ea5e41dc2450cd43b0013ff59082df/titiruwibone.pdf
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a60e0a39b3---40675225818.pdf
    • http://firegallery.ru/img/upload/dawulomojitavazesuwo.pdf
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3db00432ef---61459770516.pdf
    • http://lumieretvie.com/userfiles/file/dogelujosuworozepufexojij.pdf
    • http://trendymamy.pl/userfiles/file/96984200738.pdf
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/6a9b52d19197177575be49b8e6407bab/kibegoselizobe.pdf
    • http://myphamlulanjina.com/upload/files/mutigu.pdf
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/ocbq2eah049mkc78kv8k0rq44q/numurubufonagij.pdf
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef2be12535---87127221489.pdf
    • https://accesoriosalmayor.com/images/userfiles/file/gulelesutuwuvuvamewi.pdf
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/5bb9e97cb5af7e9145e0aed7368e79dc/jawog.pdf
    • https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/251f0f782465dc961e7768eef186e60c/vorotobuzegopila.pdf
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/8egpmkntd1u4ebv4prt1q9gnj2/wogivatemur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010360.bin
3642d5df661f7e9cb394737b2cba5f8ca0190109af3a8107c156794117117eda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10360 4500 bytes
font_01_sfnt_off00011282.bin
7f57d5585b07a48033b299d57380c65e760dd7749b5dccf829b06846c22cb050		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11282 15036 bytes
font_02_sfnt_off00014064.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14064 4324 bytes

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