Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce0e002d8e0b4c4d…

MALICIOUS

PDF

88.6 KB Created: 2021-09-08 04:46:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 89734d9ba27fb12c9b1c2ad8a56bec73 SHA-1: c2ebe8f1b79653c1bebf8597ad13ccb4ac958b7b SHA-256: ce0e002d8e0b4c4dc70d0e59b196ddd1d97a686175e4ce356ffc68927caf0d07
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs that point to compromised CMS uploads and disposable hosting, likely to distribute further malicious content or phish for information. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://nomylo.ru/uplcv?utm_term=pharmacopoeia+online+pdf PDF link annotation
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b809211745---80958366258.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/amib4gac6i2bp71rdhthsikp0e/40411055858.pdfIn PDF document text
    • http://livestocktool.com/d/files/27395245751.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/q5gqru1al7q2q3kd5fvji6c5qu/64222871866.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/082404498b03da326462e69119517274/62933717562.pdfIn PDF document text
    • http://littlepearlspublishing.in/data/eimages/file/sipogirinutosirelofidufeb.pdfIn PDF document text
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/50a0f92aff0ea90a1d5553201f57f07d/31236081072.pdfIn PDF document text
    • https://jotekonybakterium.hu/userfiles/files/rokexesovoxu.pdfIn PDF document text
    • https://voyagerf.ru/wp-content/plugins/super-forms/uploads/php/files/3b67f610287f9644aaa997ca821e0379/92640213808.pdfIn PDF document text
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608137309648e---68909401520.pdfIn PDF document text
    • https://fontan-montag.ru/img/upload/gemuzivonukitiz.pdfIn PDF document text
    • https://fuchscars.com/wp-content/plugins/super-forms/uploads/php/files/9c037d230be245a9a19b847669bcca1d/48026922253.pdfIn PDF document text
    • http://lalinpress.com/ckfinder/userfiles/files/44662265916.pdfIn PDF document text
    • http://kartinatv.org/uploads/files/74363075613.pdfIn PDF document text
    • http://sanarina-coaching.de/ckfinder/userfiles/files/46692809278.pdfIn PDF document text
    • http://abwrosedale.com/uploads/files/5380647676.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/89ab666976c61d5e60c95305a1d8a146/sitokivaxaketurelimube.pdfIn PDF document text
    • https://home-consult.lu/userfiles/files/92006107681.pdfIn PDF document text
    • https://vnnc.vn/img-hdmedia/files/86865736062.pdfIn PDF document text
    • https://abugfreemind.com/userfiles/file/12249404740.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609aafc970f13---gotubarutidelopanitubor.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/30653490731.pdfIn PDF document text
    • http://controldellaves.com/app/webroot/arxius/file/37010334744.pdfIn PDF document text
    • http://bbmpva.nl/fckassets/file/wumawel.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BC 18688 bytes
SHA-256: 2fdd43b2234275db685a7e4cc691e8819b53bb6063cba12e8d55eb9e2c3e6267
font_01_sfnt_off00012495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12495 10620 bytes
SHA-256: c74d021de830ab0a0770a718a548298a6effbafa2da955eda81fa047ef6e1f74
font_02_sfnt_off00013c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C97 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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