Malicious PDF — malware analysis report

Static analysis result for SHA-256 974ce0794be65c69…

MALICIOUS

PDF

81.1 KB Created: 2021-07-06 08:50:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 96d9712bd98101db52420d2f5ba68fad SHA-1: 975f34fdbee83b0b3920d0f87a875594872efc76 SHA-256: 974ce0794be65c69d114a5c1cbe10bfceeb06b1c6fa8e01d47531cc54d0d70e8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the nature of the heuristics point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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
  • 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
  • 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://nedirajtebosnu.net/userfiles/file/44986790781.pdf In PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160a10a6231121---56782581155.pdfIn PDF document text
    • http://caphegiabao.com/upload/fck/file/74369545971.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4f641af4f3---47430750394.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fd3be64f1d---60174555213.pdfIn PDF document text
    • https://beautyreviveshop.com/newerac2c/userfiles/file/9314915692.pdfIn PDF document text
    • http://originalcheck.it/public/img_admin/file///57046962015.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/bikef.pdfIn PDF document text
    • https://giolog.biz/images/bulk_images/files/xiviwumobomatefovajonutuk.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a4c322ea4---23356164529.pdfIn PDF document text
    • https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/c0f2e3d758c7461ea37f9ded2c2867b9/sopamizidetidesez.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/cce37a15853303563fb9d0cdd82815c2/61889784769.pdfIn PDF document text
    • https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/6aa6c2837980b05b43ad18a7d705ccfc/xibusemizovilegisadiron.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b99d5469ea8---31370906748.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/pasajuw.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160787db1d59bd---16999011376.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/99946062962.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-5-15/20210515132958462931.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5771d58d7---rewubixemomatipetaxiwap.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/gdi1tj2aqf3l5hf9fi24sv3fni/xapegajebevefe.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/e2jqi15at1h6chofdjukh0kv76/94771937197.pdfIn PDF document text
    • https://aneri12.eu/res/file/moxanavezedifumatineni.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=the+perimeter+of+an+equilateral+triangle+is+72m+find+its+areaPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0AA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BC 16824 bytes
SHA-256: 027caac0666774e73162b889d08d2b487d65e62ec6844f89ab1de6b6fdd514f8
font_02_sfnt_off00010519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10519 16088 bytes
SHA-256: 450eea5fc67953cc3bdc764260aa6f1739571c17331c9588074966c3dbef4c6c
font_03_sfnt_off00011a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A4F 11324 bytes
SHA-256: d9427090b0cf6efae7763cb3798e59c15c05987a4ca4f66fd4911d28cce462db

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