Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e9205fe7c88d6ec…

MALICIOUS

PDF

72.6 KB Created: 2021-09-04 09:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c7302615b220b2be16e463bd0048cad9 SHA-1: f41d8a1ee00fb6b1ccded680a5320f563ab817ab SHA-256: 8e9205fe7c88d6ec6ffdc08c7815591293f163f8a4683fe02fd542e094a88617
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to various external URLs, many hosted on compromised CMS platforms or disposable domains, suggesting an attempt to redirect users to malicious content. While no scripts were explicitly extracted, the presence of numerous external links and the overall detection profile indicate a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

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://prtl.pl/userfiles/file/bidefosakajopagilifugonup.pdf
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b2220f6882f---68691406560.pdf
    • http://sushikyototogo.com/uploads/files/fokun.pdf
    • https://bandotrading.it/uploads/file/11710291980.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b158d5a44---nelasuxik.pdf
    • http://mhspartan79.com/clients/9/97/97d0d0788ec4d6723ba7be3cd58769e3/File/82182483784.pdf
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/51f158d64f4527e6d64e2c04203885fc/fafepaxikude.pdf
    • https://serpavenger.com/ckfinder/userfiles/files/67320016729.pdf
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6fc11a29326b57cd6f98c1f265bf3893/gemutixowixow.pdf
    • https://dentalrud.com/userfiles/file/46317270615.pdf
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/008458a152d64a64bb3fc8ef814156a0/xalidakefom.pdf
    • https://frontivo.ro/userfiles/file/47562601791.pdf
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d353036f2---18988427434.pdf
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/taf6rae6ivf6nva1tvgak1imi5/kotanajojotamojaturitigo.pdf
    • https://claudiodituri.it/uploads/julivixeveg.pdf
    • https://serpavenger.com/ckfinder/userfiles/files/93644431518.pdf
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a60d5631202---letekuvoxurenetogi.pdf
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/bcd4906451244cae2bb7a5c351680bde/19255976317.pdf
    • https://fultoys.com/userfiles/48705035457.pdf
    • http://hanasushimenifee.com/uploads/files/33262834430.pdf
    • http://3dtechgroup.com/uploads/image/files/24627141294.pdf
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607b74225537e---kugodijobanizubejezakorex.pdf
    • http://tksvolga.ru/userfiles/file/bolimedomovopaz.pdf
    • http://antonio-pelella.eu/userfiles/files/gipiwodeta.pdf
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/66f5a710289e19a0a9c578415aee6400/zikonafotebonufebubemex.pdf
    • https://www.reflectionuk.com/wp-content/plugins/super-forms/uploads/php/files/tq3e5pml4g7loag224h7qc8bdu/94668393737.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=shrimad+bhagwat+geeta+in+marathi+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b917.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xB917 16792 bytes
font_01_sfnt_off0000d12e.bin
d50a1eb741369c24389afc28e575fcc76e1e5ba117208ea6fa43f061c1235223
pdf-font-stream PDF embedded font (sfnt) at offset 0xD12E 10912 bytes
font_02_sfnt_off0000e9e2.bin
918d32aef336d31967d9cebb217f85f3d95f1901ed7367e4335220aa540bab35
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E2 16516 bytes