Malicious PDF — malware analysis report

Static analysis result for SHA-256 2564c9b74d333bbf…

MALICIOUS

PDF

80.8 KB Created: 2021-07-29 18:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: d06c7e431e760559a973485c99b2c425 SHA-1: 0b8a96a7258f23e0fefc1d0430e7edf57733050a SHA-256: 2564c9b74d333bbfc6e3fe6621a0ca790e802d5cc05ce584f9d4e37b762cd912
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating it likely contains malicious content. It functions as a link farm, directing users to numerous external URLs, some hosted on compromised CMS platforms. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM heuristics suggests an attempt to manipulate search engine results or distribute malicious content through a network of seemingly unrelated sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://xo-sound.ru/userfiles/file/60018089353.pdf In PDF document text
    • http://davidlbrooks.com/clients/868292/File/10775919689.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/86804360989.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/27394088080.pdfIn PDF document text
    • http://www.moyekolodin.com/files/lanufanopodonuvavuxojapob.pdfIn PDF document text
    • https://cesiedizioni.com/userfiles/file/wotofa.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/9752c3786cfaf80d087af580035c7b3a/rikofibere.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/71d87ccece49ff4989f7138c37261d64/kibevoniwojevizijax.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/36a6ed555c92f3a37e4130fc78744cb2/murefepikuxowiwuzofo.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609f1aafab80f---78128912455.pdfIn PDF document text
    • http://smartcevent.com/clients/871459/File/22978121848.pdfIn PDF document text
    • https://airflow-skateboards.com/upload/file/5379067276.pdfIn PDF document text
    • http://xn--80ab1a9a.xn--p1ai/sadm_files/dapelasakimugemajonezige.pdfIn PDF document text
    • http://alexhofford.com/temp/files/file/nawokitejifuxobanawebifen.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608875152ec0c---33200847690.pdfIn PDF document text
    • http://studioagm.it/userfiles/files/mananibiderusemoruperu.pdfIn PDF document text
    • https://vegastel.eu/components/com_mijoshop/opencart/image/data/files/16902297415.pdfIn PDF document text
    • http://hanlacsclub.com/ckupload/files/vubigugolajelowevumov.pdfIn PDF document text
    • http://www.moyekolodin.com/files/48804029828.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8980f35bc9---14761036470.pdfIn PDF document text
    • https://ags-car.com/upload/files/40686087939.pdfIn PDF document text
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/d03ae604790f45aeeb227c811464c700/xalapov.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/160703322e93cc---lutugoxikanemovuvebikini.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=sejarah+bani+umayyah+lengkap+pdfPDF link annotation
    • 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_off0000da90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA90 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f2a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A7 11212 bytes
SHA-256: 75d48522aeec9b11e3a158684fee82486cd4b51a7cc58ad83398e512ce88c0af
font_02_sfnt_off00010c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C36 16020 bytes
SHA-256: d6702072f1b40d3a52b336ae3545a69f4c91d37b9133e3a61abc2aca31535a5c

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