Malicious PDF — malware analysis report

Static analysis result for SHA-256 614690e4eaca0e1f…

MALICIOUS

PDF

65.7 KB Created: 2021-02-09 01:05:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b7c9d53637143f3befd1c582c2b4470d SHA-1: eff64ad2f9184bab776152f53dc8dc9e6c8a4904 SHA-256: 614690e4eaca0e1f37e53ea59fd6c150faa98fdca221e9ce07d37f34945eff12
226 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external links to other PDFs, likely to distribute phishing content or further malware. The heuristic 'SE_REMOTE_SUPPORT_LURE' suggests a pretext for users to install remote support tools, which is a high-risk activity in unsolicited documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://maypoin.ru/123?utm_term=have+thine+own+way+lord+ukulele+chords PDF link annotation
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/fidabur-wamejizosakovix-sixokoguxiwep.pdfIn PDF document text
    • https://kofivenemiwelew.weebly.com/uploads/1/3/1/3/131380814/nigexiranudi.pdfIn PDF document text
    • https://susominen.weebly.com/uploads/1/3/4/7/134714937/c077ec2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500430/normal_600a043c35de0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408195/normal_6008cd9edc1e0.pdfIn PDF document text
    • https://wosiwimobej.weebly.com/uploads/1/3/1/1/131164223/d827a2.pdfIn PDF document text
    • http://jirekakeduvinij.22web.org/above_the_rim_full_movie_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_6010c869205f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374364/normal_5ff4ca2380d2b.pdfIn PDF document text
    • https://namonivet.weebly.com/uploads/1/3/4/4/134493383/nimojo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479905/normal_5fc9d6a393cd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529977/normal_60209bb1643ce.pdfIn PDF document text
    • https://mabamigetope.weebly.com/uploads/1/3/4/4/134493328/zizeget_munatakomesogit_jolizaneb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://watenuwinigakek.epizy.com/jonovuzamefifaxasewojeb.pdfIn PDF document text
    • http://mudozegiviw.epizy.com/zaritixelaz.pdfIn PDF document text
    • http://wokebusaxefani.epizy.com/yamaha_clavinova_clp-_120_service_manual.pdfIn PDF document text
    • http://sulalanetoki.epizy.com/cd_cover_template_photoshop_free.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3D7 5304 bytes
SHA-256: 87159cc9cb22dffd454ad69644ebfc0b2fcaf3088a6278cd770ad938570ef63c
font_01_sfnt_off0000d5f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F5 10400 bytes
SHA-256: adb2f7d2d775147901d99ff689e32a877cd6c8cb5499e2f618eafcb08eb975ee

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