Malicious PDF — malware analysis report

Static analysis result for SHA-256 62ba9593831631c4…

MALICIOUS

PDF

62.3 KB Created: 2021-09-29 09:22:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: c37ff969f7f57dc84889960bd0415e9f SHA-1: e98901fba28b2f3815ffde3374d5227d4ef477b4 SHA-256: 62ba9593831631c42f4966f575a767fa5b6d4de688611179f2bc9bfee7dfa8be
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to various websites, including those hosted on compromised CMS platforms. The presence of a 'download red dead redemption 2 android' UTM term in one URL suggests a potential lure for users seeking illegitimate software downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5156

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
  • 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
  • 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://nwatchonline.org/userfiles/file/fapolozizusixi.pdf In PDF document text
    • http://www.propper-droppers.nl/files/file/762695729.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-9-1/20210901132749719463.pdfIn PDF document text
    • https://egyptsuntours.com/userfiles/files/96844104872.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/9e2e2e07b156fd99fb28933dd9bcd496/216478436.pdfIn PDF document text
    • http://unewstoday.com/task/userimages/file/71291919010.pdfIn PDF document text
    • https://copperscrap.wasteequipment.net/ckfinder/userfiles/files/26994061945.pdfIn PDF document text
    • http://nceed.kr/pds/userfiles/files/34301835895.pdfIn PDF document text
    • http://wmsone.com/eimages/file/86288800289.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142114fe1799---kezadapukuf.pdfIn PDF document text
    • http://www.peretprod.ro/content-images/file/ginisotu.pdfIn PDF document text
    • http://seoulsquare.com/userfiles/file/gujesufinajogovuwo.pdfIn PDF document text
    • https://www.corpeverest.com/ckfinder/userfiles/files/82849989896.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/7197480772.pdfIn PDF document text
    • https://artedeeducar.com.br/ckfinder/userfiles/files/bebudezonit.pdfIn PDF document text
    • https://rubyyadav.com/nbloom/fckuploads/file/96997522812.pdfIn PDF document text
    • http://shrlie.com/upload_fck/file/2021-9-17/20210917010300209808.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/16152db312cbfd---68726639270.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/provkspnprdcohe1n3ackn8mq1/loraz.pdfIn PDF document text
    • http://contrast.no/ckfinder/userfiles/files/xewoban.pdfIn PDF document text
    • http://mebel-moscow.com/content/xuploadimages/file/porizokojowudotebujuvok.pdfIn PDF document text
    • http://wmsone.com/eimages/file/dofupozu.pdfIn PDF document text
    • http://asude.istanbul/ck_images/files/14660634318.pdfIn PDF document text
    • https://ever.dacola.com/upload/files/28958582807.pdfIn PDF document text
    • http://cbestdesign.com/ckfinder/images_store/files/10341566717.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=download+red+dead+redemption+2+androidPDF 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_off0000b514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB514 16148 bytes
SHA-256: 5effa351e1d18d1d6cf6269bfb08fea5d0befdea25c98282035149ca61a422a2
font_01_sfnt_off0000dddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDD 10592 bytes
SHA-256: a1beedc7cf4861a5a0fc644df1a21b24ac4c8970499b2d0b0c81a22140d9dde4

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