Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06945063400fe0a…

MALICIOUS

PDF

85.3 KB Created: 2021-09-02 14:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e766b14b16c96599020b2b8216889a60 SHA-1: ca8b2dcf8e45284726ab65111672e48289896301 SHA-256: b06945063400fe0a4429358cceccbf32f7a9120f32aeeeb4057d061026ec7bbd
156 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress upload directories or disposable hosting, suggesting an attempt to distribute malicious content or phish for credentials. The presence of these links indicates a likely spearphishing attachment vector, leading to exploitation for client execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 https://www.djluk.co.uk/wp-content/plugins/super-forms/uploads/php/files/l3adn6lhnqc7bmn16a6vrippmg/lodajodoleji.pdf In PDF document text
    • https://next-engineering.com/userfiles/files/noxezonoxibixarexifafoti.pdfIn PDF document text
    • https://zaragozadenoche.es/upload/files/41331438484.pdfIn PDF document text
    • https://insinkerator.us/images/uploaded/file/garagifenibegexepus.pdfIn PDF document text
    • http://chuaphucluong.com/uploads/image/files/74671856292.pdfIn PDF document text
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eb3d5165bc---zerifegebirekinek.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bca17b44593---48958327739.pdfIn PDF document text
    • http://sevvalturizm.com/rsm/files/41855982355.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/a6e3d7d8c37a87bbf39428bc4090b76c/48615390948.pdfIn PDF document text
    • http://ghinelliarchitettura.it/userfiles/files/13563808621.pdfIn PDF document text
    • http://parmalab.it/userfiles/files/34639145792.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/9699392502.pdfIn PDF document text
    • http://wanyuantemple.tw/userfiles/file/denafigafigupakukegowi.pdfIn PDF document text
    • http://massintech.ru/img/outer/files/povamubojolobetejebibeku.pdfIn PDF document text
    • https://stijsr.com/userfiles/file/45913973051.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/1806eaa42ba321d5c8fc0bcd8e40efee/fafixi.pdfIn PDF document text
    • http://megat.pl/uploaded/fck_files/file/weravegazununufi.pdfIn PDF document text
    • http://creationart.hu/files/file/lolituw.pdfIn PDF document text
    • https://foodsafebox.com/ckfinder/userfiles/files/15644256556.pdfIn PDF document text
    • https://aljazeerahpetroleum.ae/userfiles/files/1079826599.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160777c718f7eb---zavaxusunaxawuluwe.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609492d77b66a---727572646.pdfIn PDF document text
    • https://shiphangnhanh.net/uploads/image/files/soravuromulukebanupa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=bradford+white+hydrojet+electric+water+heater+manualPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE804 17760 bytes
SHA-256: 02dd3f0dda6d0e98aee00f3499cdf16c5b9ef1affb184073cc15ac4f23b4f462
font_01_sfnt_off0001155e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1155E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D75 11056 bytes
SHA-256: 8a267bba3373438bce145b8277ad715a4bc73dc7447675bc55332074adf85eaa

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