Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f6d197be80f0abe…

MALICIOUS

PDF

91.8 KB Created: 2021-08-02 02:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: fbe1ae152004f3c2c973ba2e8db669be SHA-1: bba525172960bfa4387d7860d6bb0e9d29046506 SHA-256: 0f6d197be80f0abef85e2adb2e75e9ef267183d63ff3907e60212d4c7acae106
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external URIs and link farm patterns, indicating it's designed to redirect users to potentially malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a malicious document, possibly leveraging embedded JavaScript for redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://synerhu.ru/uplcv?utm_term=asus+laptop+battery+calibration+software PDF link annotation
    • https://petrovsky14.ru/docs/files/gedororuwijilatil.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160dfeb0b280da---79977402292.pdfIn PDF document text
    • http://verynailscm.com/user_img/file/68476675914.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/talozito.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/79f289130b5bbd438a39b381e7b009d8/38861621708.pdfIn PDF document text
    • http://banhangcongnghe.com/upload/FCK/file/jolomuvupirom.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/87686930395.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/7c815c238ff622923468e9f030df3f45/59704647654.pdfIn PDF document text
    • http://clarksville.net/wysiwygfiles/file/48564023516.pdfIn PDF document text
    • https://biocoop.legreniervert.fr/ckfinder/userfiles/files/98842786427.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/c6613482319e2fb15d56434c7e061842/lunababalexujizod.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/caefd734c203e8b8a19470d051bd23f0/xireranawanuj.pdfIn PDF document text
    • http://rolfingnaples.com/clients/a/a5/a5422f62036d2d393d866963e902351c/File/relebinutewekisoxugugo.pdfIn PDF document text
    • http://slsnn.ru/content/file/99907371969.pdfIn PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/08931e10cf2fcf4cb8f696ca424ad704/78499943584.pdfIn PDF document text
    • https://lee-trading.tw/archive/upload/files/disevevawevod.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/ofrdsb6no8ks7uci3b8ljjeu0d/80729006442.pdfIn PDF document text
    • https://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/5iu2e5il6t88nvf3ufiejuu8i6/dujesalakiwekokowazo.pdfIn PDF document text
    • http://murzilka.biz/images/uploads/file/dabibu.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/9qit3kiogroprru1lerm13fpio/solemesalikaretitedep.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b4a75dd59eb---wujenororulojokabo.pdfIn PDF document text
    • http://greece-ex.com/images/blog//file/8594381430.pdfIn PDF document text
    • https://mk-promotions.com/ckfinder/userfiles/files/degole.pdfIn PDF document text
    • http://dakhoanhanai.com/images/files/18617696530.pdfIn PDF document text
    • http://ipost.mn/ckfinder/userfiles/files/93979806655.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_off0000fc02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC02 18800 bytes
SHA-256: 525c595f335683165a0e5ce2e8259b9622d6f6d4a86eeb9fd359b5e50bf21fe6
font_01_sfnt_off00012d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D7D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14594 10892 bytes
SHA-256: e250ff0691774abeb8b55a3a557a1a0ff379ebeb5a1c65a2a7b358682f917d35

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