Malicious PDF — malware analysis report

Static analysis result for SHA-256 217be5bb4377bfb1…

MALICIOUS

PDF

88.7 KB Created: 2021-10-08 13:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: e7671768c8d3d849a1e53681c804f611 SHA-1: 7c52e043430547cec693bf626902c430a9e820ff SHA-256: 217be5bb4377bfb19a7c6b3824adbf32b3e9962681a524e48e76721d894e114b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs that form a link farm, directing users to potentially compromised websites or disposable hosting. The presence of these links suggests an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://drafthe.ru/uplcv?utm_term=tommy+and+molly+love+island PDF link annotation
    • http://fapannimario.it/userfiles/files/rurasevapawasemise.pdfIn PDF document text
    • http://xn--franzsischebulldoggen-lec.eu/userfiles/file/26543392914.pdfIn PDF document text
    • http://pyramidplaster.com/file_media/file_image/file/lepitif.pdfIn PDF document text
    • https://fratellifurloni.it/file/88606255038.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16131d413e8743---50231910023.pdfIn PDF document text
    • http://www.sunriseacademy.in/ckfinder/userfiles/files/tikuketuxemugofe.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153ff729600c---mupopavemifoginogofud.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/161446cd7c0c4d---zuwovetopirodalovo.pdfIn PDF document text
    • http://location-venise.com/italie_documents/files/negiwugalomazogutolut.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/161367468de243---8582268577.pdfIn PDF document text
    • https://activepymes.com/pub/file/39021805019.pdfIn PDF document text
    • https://ladymamashop.com/uploads/files/202109151649284439.pdfIn PDF document text
    • http://espaciocultivarte.com/ckfinder/userfiles/files/98701823471.pdfIn PDF document text
    • http://soles2walk.com/data/file/55350383671.pdfIn PDF document text
    • http://otevrel.eu/ckfinder/userfiles/files/13934450432.pdfIn PDF document text
    • http://erictex.com/ufiles/files/favojapugo.pdfIn PDF document text
    • http://nanobubblevietnam.com/uploads/userfiles/file/davelusowelike.pdfIn PDF document text
    • https://weddingitaly.jp/images/file/68052874315.pdfIn PDF document text
    • http://innotack.com/userfiles/file/nudug.pdfIn PDF document text
    • http://mobilni-kadernictvi.cz/files/file/13762375148.pdfIn PDF document text
    • http://www.mbk-montage.nl/ckfinder/userfiles/files/getinebonoj.pdfIn PDF document text
    • http://santeh.md/img/files/kuvomob.pdfIn PDF document text
    • http://vipforiraq.com/userfiles/files/jawisoxewevebudalugifatix.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021090601481853.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/fohddd9sf03kunte2oknqjb9v0/vusixaxefanekem.pdfIn PDF document text
    • http://baltic-rt.ru/ckfinder/userfiles/files/58560076942.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_off0000f2ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AD 19468 bytes
SHA-256: 55e91d5149aae13b7cbde857008341b8c3eacb2a6e86476c1b32dcde454ea0a8
font_01_sfnt_off0001256d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1256D 10356 bytes
SHA-256: bdb4eaa700b403e2886db8824cb1e1b70ce4fa6cf3fa60745101d1b4fd546c97
font_02_sfnt_off00013cc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CC6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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