Malicious PDF — malware analysis report

Static analysis result for SHA-256 b07d47a6a5350ec9…

MALICIOUS

PDF

83.6 KB Created: 2021-05-08 06:33:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 094cbe66221cf449f633c36c45b0d3b8 SHA-1: 7cf595eedb9db87143f045d324f8cd7abf73a977 SHA-256: b07d47a6a5350ec9ac5a7cd29ab251ca587bac36902db8a0d398f16fc992f599
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a common query, likely to trick users into clicking it. The URL points to a domain associated with malicious activity, and the file was flagged by ML classifiers and ClamAV as malicious phishing content. No scripts were extracted, but the PDF structure and embedded URI are indicative of a phishing lure.

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://mezovuduw.ru/strik?utm_term=how+to+make+a+healthy+meal+plan+on+a+budget PDF link annotation
    • http://xozonline.ru/wuzatukebycob.pdfIn PDF document text
    • http://marketitaly.pro/esic_form_7b_free_downloadapko4.pdfIn PDF document text
    • http://gatorama.site/wag_the_dog_online_freeji95g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393036/normal_600e71ad835b1.pdfIn PDF document text
    • http://eyebrowthreadingdallastx.com/practica_arduino_con_sensor_de_temperaturaye35i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414491/normal_5ff018b717be6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481423/normal_5ff3e0cb4272a.pdfIn PDF document text
    • http://sale50.pro/vulidugidukofujejepirupvxncc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/66194796598.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/tiboxijuvuna.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/71550275228.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/kovejitokutodabog.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/16166522949.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89b719f1-4635-472d-b881-58eb8a5235cd/what_size_does_brandy_melville_fit_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c6822a6-cafe-4d7f-a513-faba68d2d89d/how_do_i_program_my_bose_remote_to_my_apple_tv.pdfIn PDF document text
    • https://b1f0a730-f0e4-4bcf-918d-a915077b90d0.filesusr.com/ugd/a7c69d_af4781515b0a4cce9222f2e6fb476824.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7ce4f74-c642-46f1-9798-2bd54db79c87/gepuxufovijuwil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec4b1c06-f649-4d4d-b586-80579c93c43d/how_to_find_wifi_password_for_hp_deskjet_3630.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60ffb329-1363-47f4-bc2d-c184ec270271/tezirebe.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/talidutorulofixag.pdfIn PDF document text
    • https://0491f86b-060d-4f4a-be23-b0d01488777f.filesusr.com/ugd/faa7ef_5293c589a14947ec90db29b96d590bb6.pdf?index=trueIn 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_off00010700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10700 5456 bytes
SHA-256: 94310c7f832e036c163a0e1fd3665f3615c843f97ab4e8ed93bb5768e412c41b
font_01_sfnt_off00011978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11978 11048 bytes
SHA-256: 7fb28f727d1f22256ecd3626c3aeb15e81a3f5aa3d609fc24603b374ff578385

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