Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ff8246324ae3be0…

MALICIOUS

PDF

67.8 KB Created: 2021-07-29 18:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: caa859f85ab2f36f18ad81c68e83eb4d SHA-1: 4bccc98c96f00bd7e610c8a36bd053084f09670b SHA-256: 8ff8246324ae3be0a8b130034360712fa5abbd230638e9e9bd010189d200f0ff
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous external links, many of which point to compromised WordPress upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware hosting sites. The presence of external links suggests an attempt to lure users away from the document to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9158

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 http://designpavelzapletal.cz/files/file/48461618892.pdf In PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071711a906d7---68037408557.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a413a427c84---73986052316.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/6ba3a0ead5d947a3180300eeffa7e44c/satosafavig.pdfIn PDF document text
    • http://kimwendelldesign.com/ckfinder/userfiles/files/sirovomomezasufubadexad.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e44fc611b6---87216082057.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf780bf022---newovazetulu.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd09550cc21---kunukubupiwo.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160aaed912b6aa---91010356459.pdfIn PDF document text
    • https://oliogalanis.com/file/2650381673.pdfIn PDF document text
    • https://genegurumiraclehealer.com/userfiles/file/34106350050.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/747265hfutu6bqg4mp5qst0a55/vudur.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/160aa5b8c2159b---butixidiwawukelusulekipe.pdfIn PDF document text
    • http://explosivedevices.ru/media/file/finagapow.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608785d63fa75---musabodawa.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e5189ecc2b---47431034557.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb851cdc7e6---fasiluvuva.pdfIn PDF document text
    • http://okmarin.ru/userfiles/file/78499922319.pdfIn PDF document text
    • http://abcbyspu.com/ckfinder/images_store/files/66631889428.pdfIn PDF document text
    • http://apple888.vn/luutru/files/78260887491.pdfIn PDF document text
    • https://mangonebike.com/uploads/file/tidudemizarupetodimofole.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/45425072081.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c18b8135677---figabulojepase.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=taller+de+lectura+y+redaccion+3+unamPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC06 10712 bytes
SHA-256: 22ae9ee354b0431a2c167243cfe1c6a0a59ace460af0cf50790a1a87f6c4b131

Open this report in the interactive analyzer, or submit your own file for analysis.