Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0c7bb8106f8839…

MALICIOUS

PDF

83.1 KB Created: 2021-03-03 02:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f68ab63e72e402d662d37d3eccfef7bb SHA-1: dcb4796412c4018cb34bc0bfc9eb1590ec52289d SHA-256: 6d0c7bb8106f8839df5d57fa8beb579e4add4851ac7a5c31a6b8c3763087ac92
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically crafted to appear as a search result for a common query, likely to trick users into clicking. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://soxebez.ru/award?keyword=what+do+the+fitbit+flex+2+lights+mean PDF link annotation
    • http://cashfree.store/fajivikedafategizuo1ib.pdfIn PDF document text
    • http://bubuwem.iblogger.org/kokexokowelujugora.pdfIn PDF document text
    • http://polizoriv.iblogger.org/do_you_put_a_comma_after_the_day_of_the_week.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/98609104278.pdfIn PDF document text
    • http://rasazajafatirek.mypressonline.com/poteraxilejeluwa.pdfIn PDF document text
    • http://bamirajewenexo.medianewsonline.com/31222713986.pdfIn PDF document text
    • http://romeital.space/megabot_flying_robot_car_transformermv97i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460946/normal_5fc8545ea5550.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ferogexomemu.rf.gd/chitarra_acustica_ibanez_performance.pdfIn PDF document text
    • http://soranodabiwegi.myartsonline.com/can_you_use_carbon_arrows_with_a_recurve.pdfIn PDF document text
    • http://roveramo.atwebpages.com/12427448912.pdfIn PDF document text
    • http://nejimafalun.onlinewebshop.net/678154266.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_off00010727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10727 5576 bytes
SHA-256: 7a243376f4a134b89b70a1bf9642310738cbd9cd640d36942293f6bc7c0c7478
font_01_sfnt_off00011a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A11 10872 bytes
SHA-256: 81648d8def8654fc4038644b5ea82875af8819910509e71666b98459e9eeb8ec

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