Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e1ade7a4dc9b931…

MALICIOUS

PDF

70.2 KB Created: 2021-09-26 00:14:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6acac918c7dadf786d6b6d89c2dcf639 SHA-1: de1aed7ec12e9bf2fb48754643c7ed0344dbcae4 SHA-256: 6e1ade7a4dc9b931d1517eab63e4267b6f27a8cc47aca9681c0da1b4a951ad25
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to a link farm hosted on disposable domains, indicating a likely attempt to redirect users to malicious content. The PDF structure and embedded links suggest a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

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
  • 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://bahamianbrewery.com/ckfinder/userfiles/files/fuxufavota.pdf
    • http://www.madiran-cruduparadis.fr/ckfinder/userfiles/files/tuzoza.pdf
    • http://top-rubber.com/admin/fckeditor/editor/filemanager/connectors/upload/file/81602069267.pdf
    • http://galsabino.it/userfiles/files/fukutabivasipisireb.pdf
    • http://kmsenior.org/file/files/40826809699.pdf
    • http://xn--80akoseq9f.xn--p1ai/userfiles/file/zofog.pdf
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/8b4d816606941e1bf9eafbe135a14735/tunikubori.pdf
    • http://chapaconoticias.com/assets/ckfinder/core/connector/php/uploads/files/32728947248.pdf
    • https://cs-nippon-cp.com/mailmagazine/upload/files/buvoxopiviferomatok.pdf
    • http://silarperu.com/UserFiles/file/vewowomavipulogel.pdf
    • http://japhina.com/upload/file/49085825617.pdf
    • http://pekingtogo.com/uploads/files/51748277756.pdf
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161495ab745469---megewa.pdf
    • http://olivetheater.com/userData/board/file/julizuluwofivomatosipe.pdf
    • https://labelmarket.eu/data/file/17863048030.pdf
    • https://asiastudy.in/ckfinder/userfiles/files/lirekawomi.pdf
    • http://trunglamdecor.com/uploads/userfiles/file/64657956985.pdf
    • https://hantverkarenisandby.se/UserFiles/files/49788923440.pdf
    • https://kheops-so.fr/ckfinder/userfiles/files/1213980069.pdf
    • https://elpollopaulino.com/cenavarra_userfiles/files/gerarapoxinex.pdf
    • http://cokhiminhhien.com/media/ftp/file/xavenivitemovusifub.pdf
    • https://xn--lenachatka-57b.pl/uploaded/file/56176802063.pdf
    • https://hung168.tw/UserFiles/files/zomezurevejafaweniduwum.pdf
    • http://phunphu.com/userfiles/file/zizozepitivixaj.pdf
    • https://medpressa.ru/files/file/48215198962.pdf
    • https://irrisyst.eu/files/file/53039113496.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=getting+over+it+game+unblocked
    • 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_off0000b0de.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0DE 16792 bytes
font_01_sfnt_off0000c8f0.bin
43dc8f4afca8e1ceefafcb788c80fbe7af7a803a45f0adbae2b4992d755b477a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F0 15948 bytes
font_02_sfnt_off0000f203.bin
7b3be94c7c2ce2910363a6eba085da4eea2edea05f0b44a31595123fd0165ef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF203 10980 bytes

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