Malicious PDF — malware analysis report

Static analysis result for SHA-256 f18469cc3dad4a92…

MALICIOUS

PDF

67.6 KB Created: 2021-09-27 18:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d5dc6b0e918d9133dda06f3f8faeccdc SHA-1: f2b48f94080979eafa21e1945c3aef63745fc5d9 SHA-256: f18469cc3dad4a92edf532ec15a980e186068239bd67fd79486cedbf350f316c
146 Risk Score

Malware Insights

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

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link, a common tactic for distributing malware or redirecting users to malicious sites. The ClamAV detection and ML classifier further support its malicious classification. The document's structure and embedded URLs suggest it is part of a link farm designed to obscure the ultimate destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 http://ledlight-lamp.com/mingyi/images/userfiles/file/geruju.pdf
    • http://naszemotyle.natura2000.pl/imgturysta/files/32200687635.pdf
    • http://balmybnb.com/t/tutorfirm/uploads/ck/files/letunofowumojijusekometiw.pdf
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131d0a72138e---9184520961.pdf
    • https://eledigitalpr.it/allegati/file/wubisati.pdf
    • http://innotack.com/userfiles/files/32048052680.pdf
    • http://topp.pl/_topp/file/96823351086.pdf
    • https://carpenterstouchnj.supremeroi.com/FCKeditor/file/siwasozez.pdf
    • http://noahmission.org/dataroom/file/28902987047.pdf
    • https://manage3.realtourvision.com/rtv/ckfinder/userfiles/images/files/64057956167.pdf
    • http://ergo-logo-bamberg.de/userfiles/file/10213154953.pdf
    • http://mmbc.cz/_data/user_files/file/81806764893.pdf
    • https://happyfun.tw/uploads/files/202109122318084969.pdf
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/rozomexawuxetawofawuna.pdf
    • http://twozonechickenlasvegas.com/uploads/files/kijijobux.pdf
    • http://xn--evdebakmhizmetleri-k0c.com/uploads/file/66237157655.pdf
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161329306d3da3---45387094950.pdf
    • https://soportedevida.mx/ckfinder/userfiles/files/rimezokofojusaxexa.pdf
    • https://tivirtual.com/userfiles/file/55652833884.pdf
    • https://virker-ikke.dk/files/feraz.pdf
    • http://japanbizkorea.com/userData/ebizro_board/file/17421796864.pdf
    • https://nothingbutsafetyglasses.com/userfiles/file/99678491259.pdf
    • https://nezrenweb.com/calisma2/files/uploads/talutix.pdf
    • https://inprovitbrasil.com/ckfinder/userfiles/files/widega.pdf
    • http://77owship.netsociality.com/upload/files/xabegexomup.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=vlc+download+android
    • 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_off0000afad.bin
ea6387ccdbc0b490aa30e1d2356f249388dce19113de0570dd0ef999a19452b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAD 10020 bytes
font_01_sfnt_off0000c60a.bin
46e433ef4b455bd38c0df249b215835eb1cc933410da3db6f95a62b1dfe0919c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC60A 14248 bytes
font_02_sfnt_off0000e94a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE94A 16792 bytes

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