Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a4fc87e6978134…

MALICIOUS

PDF

83.2 KB Created: 2021-09-18 07:19:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 6cb979025f7cb872779e3ac90a258509 SHA-1: a7b1cb507e75505fc45456a69bea2c248fa3ffcc SHA-256: 06a4fc87e6978134f0268b0f5cbbf084a662173a62ab38c59f12ec5fa5e3510f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. This script likely facilitates the redirection of users to external URLs, as indicated by the numerous external URIs found. The ClamAV detection and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic further support its malicious nature, suggesting it's part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4210

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.
  • 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.
  • 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 https://jordanadams.com/ckfinder/userfiles/files/vuzawaruzekuzapip.pdf In PDF document text
    • http://nfraccon.org/userfiles/file/49965564181.pdfIn PDF document text
    • http://ngocminhcnc.com/demo_thietbimay_24_7/upload/files/terobigo.pdfIn PDF document text
    • https://pianoinprimopianofestival.com/uploads/file/dovur.pdfIn PDF document text
    • http://lncxjzxxw.com/upload_fck/file/2021-9-9/20210909065635689053.pdfIn PDF document text
    • http://ciarajewellery.com/editor_upload/file/63571688844.pdfIn PDF document text
    • https://mavachhaiphong.com/upload/files/zararowafegixaral.pdfIn PDF document text
    • http://piannocreativo.com/js/new/fckeditor/userfiles/file/24585169745.pdfIn PDF document text
    • https://gkia.org/kingkong/userfiles/files/42069806606.pdfIn PDF document text
    • http://avvocato-callegaro.it/public/file/tujotajevitopeja.pdfIn PDF document text
    • https://encoyun.com/calisma2/files/uploads/99528274938.pdfIn PDF document text
    • http://zjnep.com/ckeditor/ckfinder/userfiles/files/46478681536.pdfIn PDF document text
    • http://pokwuttibut.com/file_media/file_image/file/44278324485.pdfIn PDF document text
    • http://antwerp-reefer-tournament.be/argt/files/polukatetibunuser.pdfIn PDF document text
    • http://we2meeting.com/ckfinder/userfiles/publics/files/68882806591.pdfIn PDF document text
    • http://yongqingtech.com/d/files/xisemab.pdfIn PDF document text
    • http://simonkuehner.de/gfx/userfiles/files/porufepigolubemodaf.pdfIn PDF document text
    • http://gamecoast.by/uploads/files/jelebaxetesuvepaf.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613b1d6d5bcb1---tilitinekudakufojadoj.pdfIn PDF document text
    • https://globalcircle.club/userfiles/file/woxomebenelakotisi.pdfIn PDF document text
    • http://optykglowacki.pl/obrazki/files/mojedeposokunubarerex.pdfIn PDF document text
    • http://yuemeism.com/uploadfiles/files/17350870041.pdfIn PDF document text
    • https://hopadive.cz/ckfinder/userfiles/files/91207210230.pdfIn PDF document text
    • http://topbuild.net/content/xuploadimages/file/xodagajoredelafodoluzu.pdfIn PDF document text
    • http://capital96.com/userfiles/file/76756590519.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=android+operating+system+lollipopPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF824 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11036 17884 bytes
SHA-256: 16ec38fb017bee8fc797f71056ea4c49ec06defe6da435b0d5344731cb976d7d

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