Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f2150cffdb2b1a…

MALICIOUS

PDF

81.7 KB Created: 2021-06-14 02:25:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e4552c9c813337203c5f6b766bc443c4 SHA-1: 63f4a11c8639b1ad35ab573a13c83eeeeebd7022 SHA-256: d2f2150cffdb2b1a3eb283cd86fa382879da93ca3ca688487bedb987e86efc25
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to lure users. The presence of 'utm_term' parameters in some URLs indicates an attempt to track user engagement with deceptive content, likely related to phishing or malware distribution. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6672

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=avengers+2015+full+movie+in+tamil PDF link annotation
    • http://trendstyleimage.com/uploads/ckfinder/userfiles/files/vubul.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a69c225a29f---pozalabe.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/a1625e1aacaf0ccd9d438dd7f5ee809d/27978569687.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf6f2ddc07---suviwopum.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/wazerelosurogutiguren.pdfIn PDF document text
    • http://cpils.com/userfiles/file/8845839209.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/4aa9u5m17vnqllbvrvdbdr3ns4/63259367910.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/197331ed27e1729b4bdf74cda03cc086/34731847947.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/ae13f3488fcb53ccaa88b36500ade723/48867628480.pdfIn PDF document text
    • https://ratsimae.ee/media/contents/file/godozererunilomalufinarur.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/29ac5dcf36ca01a7a763866c0611927a/gegademawodozuga.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/00d6596282260f5e945d29cc8bba2994/widorilivasonenoverikul.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ac23ed28921---48767081786.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/9aa11daa73efa592a09f2df560ea86b0/74340195498.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160adf42dc198e---36274228151.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/ecc74f5fd16c227890542cf4305e47e6/niwirilojewinomu.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000120c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x120C4 14484 bytes
SHA-256: 272bf2580bb53d11d15324b4b7a17a32faa53dba8a48edfbd2ee4711d3d8bb04
font_00_sfnt_off00010dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC5 5588 bytes
SHA-256: 12fcc95e7d64f73d05c22bb960af68cd5a3a5f20e732749225fbb585b93189aa

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