Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2ccfdfb3dba5eb3…

MALICIOUS

PDF

83.1 KB Created: 2021-09-18 12:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 96402797859fd1c5fcb228a08b384297 SHA-1: 94d6dd84c1cb51ca98f3358b8c645cffded1d4f6 SHA-256: c2ccfdfb3dba5eb35d9b06199f380174d0e98d6a2e7a90dcd9e2557aa9bdb673
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous links to external websites, many hosted on compromised CMS uploads or disposable domains, suggesting a phishing or malware distribution lure. The presence of embedded URLs and the nature of the heuristics indicate a likely attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://smidgel.ru/uplcv?utm_term=my+talking+tom+hero+dash+hack+apk PDF link annotation
    • http://moscowprice.com/content/xuploadimages/file/bizidukotobu.pdfIn PDF document text
    • http://myesen.life/userfiles/file/45277161603.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136a8fbc3903---82196921893.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/sa4oqguej35keiav89916dgnv1/dugawo.pdfIn PDF document text
    • https://pmeds.us/userfiles/file/24851951361.pdfIn PDF document text
    • https://tw-itemaos.com/ckfinder/userfiles/files/2056819370.pdfIn PDF document text
    • http://tao-oita.com/admin/upload_filesfile/19487891369.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/v6iic6c13qd777etib408r0dr7/47469171957.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/e1583ecaad28dcf8c6554c16b6aba3da/tisunenobixatukit.pdfIn PDF document text
    • http://mjacz.cz/soubory/files/21354152650.pdfIn PDF document text
    • http://maketmaster.ru/admin/ckfinder/userfiles/files/45299695384.pdfIn PDF document text
    • http://12shio2.com/contents/files/84866949094.pdfIn PDF document text
    • http://e-photo.lv/ckfinder/userfiles/files/59193308311.pdfIn PDF document text
    • http://lonniestireandauto.com/nbloom/fckuploads/file/4156076771.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/9f8c3771ef8e1e2789f7ead82ee4b6f3/tilezal.pdfIn PDF document text
    • https://maviet.vn/upload/files/lamifosisine.pdfIn PDF document text
    • https://mercerapparelss.com/userfiles/files/jonejogixutef.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613093651471c---34405152240.pdfIn PDF document text
    • http://balalajka.nu/media/63645115505.pdfIn PDF document text
    • https://pragatitic.org/ckfinder/userfiles/files/55804012899.pdfIn PDF document text
    • https://nakipoglugroup.com/upload/ckfinder/files/27696115287.pdfIn PDF document text
    • http://castrolmintabolt.hu/images/upload/file/kovisovovibuxidiwogakajar.pdfIn PDF document text
    • http://chothuexeninhbinh.net/data/dulieu/files/87851640709.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/fbf9a6675e281e2533e3ccf49034f379/83644147734.pdfIn PDF document text
    • http://niktid.ru/userfiles/file/wijugirisuwovefojebivevu.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_off0000e01f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01F 17360 bytes
SHA-256: f69da27a974517d7c848e0d434273152784592139c97651a40cc3fa08a518c7c
font_01_sfnt_off00010cf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF9 11160 bytes
SHA-256: 9297033b99d9b40a278b2ca9e580849e28a819f654f8408c7674cd9cfba8e081
font_02_sfnt_off000126ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126AB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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