Malicious PDF — malware analysis report

Static analysis result for SHA-256 608fbafa2d42e271…

MALICIOUS

PDF

79.2 KB Created: 2021-01-19 03:44:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 057f8b85e6be31ff4eca33f91be4ca18 SHA-1: 733602e50e9ca162869ddfe15190ddacb099dc27 SHA-256: 608fbafa2d42e27136f3b92cb500b67d927212819cd9fe67f882e1892449eb17
184 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to software downloads, suggesting a lure. The ML classifier and ClamAV detection further confirm its malicious nature, pointing towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/123?utm_term=need+for+speed+most+wanted+free+download+apk+and+obb In PDF document text
    • https://site-1084296.mozfiles.com/files/1084296/vmware_workstation_10_with_serial_key.pdfIn PDF document text
    • https://depazazivika.weebly.com/uploads/1/3/4/6/134697987/rugorakiv-narakazosegas-lalefapivilubo-vufalezadixew.pdfIn PDF document text
    • https://betirowi.weebly.com/uploads/1/3/4/6/134661799/fuvowixajobum.pdfIn PDF document text
    • https://site-1250905.mozfiles.com/files/1250905/jurolovapaxekoxopekibodi.pdfIn PDF document text
    • https://feveronibamuja.weebly.com/uploads/1/3/5/3/135300243/6931997.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375196/normal_5fc3df545f8fc.pdfIn PDF document text
    • https://wulodegekejiwa.weebly.com/uploads/1/3/4/2/134266030/9754992.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/mogipegi/formal_accusation_legal_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/dazilakawaximep.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/25571458408.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/rcog_guidelines_for_thyroid_disorders_in_pregnancy.pdfIn PDF document text
    • http://lonozixugixapap.epizy.com/beachcomber_hot_tub_model_530_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/adjudication_application_form_maharashtra.pdfIn PDF document text
    • http://vovajixavago.epizy.com/vidmate_for_iphone_7_free.pdfIn PDF document text
    • http://wokoguzesel.rf.gd/16810828620.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/hiking_fansipan_without_a_guide.pdfIn PDF document text
    • http://rufegojokod.epizy.com/radish_plant_information.pdfIn PDF document text
    • http://renowuvix.epizy.com/13348103423.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF66 5452 bytes
SHA-256: 1156d06f36d8eec54aa63a7eb5925161699bfc75cd3102ba75dab41f5bcc32d2
font_01_sfnt_off000101e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E6 1800 bytes
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
font_02_sfnt_off00010a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A76 10524 bytes
SHA-256: 9e0a979f11e72b90f3e12e6104f5fa80ecd1c7a14d14f883518bfe6072c15da4

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