Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa6d8f3930848d3…

MALICIOUS

PDF

124.7 KB Created: 2021-09-05 01:18:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 5915fc37ea8229102cdf8790aa6e019e SHA-1: b96b0de171f88da14f888972407001cf8575a958 SHA-256: faa6d8f3930848d3f635a8121bbfd09f1c5be6a066cbcfc2e6012b68b048bfc7
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of embedded URLs, many of which point to compromised WordPress upload directories or disposable hosting, indicating a link farm designed to redirect users. The presence of these links suggests the document's primary purpose is to lure victims to external malicious sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://odpadykj.cz/UserFiles/File/rosunakojerufepizep.pdf In PDF document text
    • http://iphonedown.com/ckfinder/userfiles/files/41305592912.pdfIn PDF document text
    • http://adamshs-pdx.com/clients/d/d3/d3c120c733f7363e2cdaef2cff5f3687/File/goziwodid.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/od2oinarpcvm05kh1hs6pcq3l1/30813241509.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/dcace2deb523046e7c105fc7fa966216/25377666078.pdfIn PDF document text
    • http://etrustmi.com/ckfinder/userfiles/files/zagamefufom.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/0e22eb9235a06b323788ecbb39ee30c7/21137326057.pdfIn PDF document text
    • http://dishandspoonproductions.com/ckfinder/userfiles/files/20705472531.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/00918c3f632de822bd93fc4032ca8ffc/siwudawonorexosawadeto.pdfIn PDF document text
    • http://amctop.com/board_data/editor_img/file/202106172157.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e4bef0a49cf---5921646551.pdfIn PDF document text
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/8e90129b2707f79f3451044ae2ec7638/36375346489.pdfIn PDF document text
    • https://aynispirit.nl/userfiles/file/mupigun.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/4fd21a57350397893f4f7126eba20009/topejanodoloj.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a563885d2---kezowexalifemafuriwiw.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/3fm4daml8aoedbdokvlkub5idv/23796026559.pdfIn PDF document text
    • http://babamoleskine.com/files/file/fedoritize.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/rojejivileganujuzaso.pdfIn PDF document text
    • http://tuanlongland.com/upload/files/51948937341.pdfIn PDF document text
    • https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/6034e7d860929b17f08236c3706ab8d9/veziziwijajedanevexukiwis.pdfIn PDF document text
    • http://st-ark.it/userfiles/files/15639595279.pdfIn PDF document text
    • http://illinoislivestock.org/userfiles/file/14710204262.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/d33d853f383908aecc063f529a5a86fa/29018618780.pdfIn PDF document text
    • https://taperagi.com/contents/files/bavejuse.pdfIn PDF document text
    • http://vendsol.com/userfiles/file/jotudaviladu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=evangelismo+dinamico+luisa+j+walker+pdfPDF 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_off00017eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17EB3 20052 bytes
SHA-256: ad7d225349c758a378a04ef37d5b610b0028fad1c848afcc62c2ee2a10235ced
font_01_sfnt_off0001b252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B252 11324 bytes
SHA-256: 28d8d27d76c6551a0d64a9d9a64a2c90cf522444c495e3195d69c859c19485f0
font_02_sfnt_off0001ccb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CCB7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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