Malicious PDF — malware analysis report

Static analysis result for SHA-256 c219ee427dd66cdd…

MALICIOUS

PDF

68.5 KB Created: 2021-09-01 18:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 73f688ee2e8c005888fb3d99a3369194 SHA-1: 038f6a4f59b101415c1adba1612820d2815f5c7b SHA-256: c219ee427dd66cddad2b15c2b1679d2442123752ea6e6254d1a3d2590c4308e0
176 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, including being image-only and containing numerous embedded links to external websites, some hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary attack pattern involves tricking the user into clicking these links, which likely leads to the download or execution of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 https://huntic.ru/uplcv?utm_term=keeper+of+the+grove PDF link annotation
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16099910ddb9f6---nexezigigonuwad.pdfIn PDF document text
    • https://stop-remont.ru/ckfinder/userfiles/files/84755367879.pdfIn PDF document text
    • https://slide-bearing.com/d/files/22421198943.pdfIn PDF document text
    • http://oryginalnedekoracje.pl/userfiles/file/nideguzabafabunebides.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16099ed9fb4894---lukopekugi.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607507f5588b8---lodabupaja.pdfIn PDF document text
    • https://ddc-touggourt.dz/ar/files/16398724096.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/b8d783086f02f8dd93d61f222f8463aa/90899336024.pdfIn PDF document text
    • http://njuhome.pl/ckfinder/userfiles/files/pivoresupiradimesi.pdfIn PDF document text
    • https://bcm.es/files/galeria/files/60006823247.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d2c78ff14---27011662535.pdfIn PDF document text
    • https://oasis-travel.ro/files/vivutirikeluxesowapawan.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607a64d5552da---76390445492.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3fc73d982---fodepuwizoto.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16072de8d27c24---95386970424.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/a239ea94ed9b1f3a5b2ef4853c26550b/553624105.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/8cea4d24b4399eadda36ac063d9c5c4e/85549137624.pdfIn PDF document text
    • https://study4student.com/cache/fck_files/file/74047570526.pdfIn PDF document text
    • https://congtydaihai.com/upload/files/tizegitod.pdfIn PDF document text
    • https://lhorizon.ca/uploadHorizon/file/57669415329.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/mb4n1svo0hhrj1moa1cgge75t8/87298363080.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/32074927076.pdfIn PDF document text
    • http://beiwendq.com/userfiles/file/rasozinitixebonijudo.pdfIn PDF document text
    • http://vincentpopetutoring.com/clients/d/dd/dd6b7bcf94cac99d3bed97cf8166637b/File/71856072166.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/a105ae44c561075cc7d248f2f155c9cd/33605285070.pdfIn PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b1ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1AB 10124 bytes
SHA-256: 3727a63929d8d89472be1f77e5197bd508a0acc0d9db56d4e0dbd71eea1624d7
font_01_sfnt_off0000c86b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC86B 14096 bytes
SHA-256: 897e247c2f0a19bd8a4293dc06a3da6ee699baacdbc5baf4b7febaf87afcdb4b
font_02_sfnt_off0000eb0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1