Malicious PDF — malware analysis report

Static analysis result for SHA-256 209f5f2cd49cf0cb…

MALICIOUS

PDF

79.2 KB Created: 2021-09-15 19:19:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eee967603c9e3120118dbd1c5c6b4672 SHA-1: 053fbae2bfda35e4eea6ab06fe14c6188307d5a7 SHA-256: 209f5f2cd49cf0cbfd7d04921d859c7b7bd1ece6ddc6813902a804b385bb2fe1
252 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains embedded JavaScript and presents social engineering lures, including a fake download button and instructions to paste content into a terminal (ClickFix attack). These elements suggest the document is designed to trick the user into executing a command that likely downloads and executes a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 10

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://matchedtubes.de/userfiles/file/11381956274.pdf
    • https://nitm.ac.in/nitmeghalaya/ckfinder/userfiles/files/minozofebejixozigux.pdf
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/oc8gjmphcsd4m1iovc1hh5itf2/niruxozesixavalavevap.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613826eec6a55---vofadavoxod.pdf
    • http://yh-nutri.com/filespath/files/20210908061007.pdf
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613df7fa70f28---tupogakekekogoxu.pdf
    • http://www.hz-kontejnery.cz/ckfinder/userfiles/files/36174524513.pdf
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d427bee6a4---30223785312.pdf
    • http://eunlocker.com/Images/Editor/file/patigadafuvesukuvafijegif.pdf
    • http://turatabor.hu/media/21143084718.pdf
    • http://pzhjintai.com/upload/files/wodibasusav.pdf
    • http://www.swaving-stalinrichting.nl/ckfinder/userfiles/files/rixomonugim.pdf
    • https://impeka.lt/components/com_mijoshop/opencart/image/data/files/mitesa.pdf
    • http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/77789560359.pdf
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d56c77247e---83784754812.pdf
    • http://studiotecnicoforace.eu/userfiles/files/66412123013.pdf
    • https://highfieldhousehotel.net/nbloom/fckuploads/file/26349150823.pdf
    • http://csc020.com/userfiles/file/20210903101950_56khba.pdf
    • https://zlato-stribro-investice.com/upload/files/kolixo.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161379a940d399---widiruzonugukatutala.pdf
    • http://master-br.ru/img/file/pebubut.pdf
    • http://toyotarent.kr/FileData/ckfinder/files/20210911_851790EF8C268326.pdf
    • https://smsenerji.com/resimler/files/37539972452.pdf
    • https://meritumptt.pl/dokumenty/file/73843409900.pdf
    • https://burragebrothers.com/demo/jolie/beta/userfiles/files/molipodubujegelezo.pdf
    • http://wernitznigg.at/files/jaselajebovuzifumoxanuve.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=root+pixel+4
    • 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_off0000d4b0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B0 16792 bytes
font_01_sfnt_off0000ecc6.bin
96e6874d29cf1b0039162b43bc83285978acfaf02a4f4e98dbebffabcd0dd780		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECC6 9936 bytes
font_02_sfnt_off000102e4.bin
37079623e63078aade9bb5a9e66cfffe7e7ffa03de5c8943b9c1f7eefda59dd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102E4 17256 bytes

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