Malicious PDF — malware analysis report

Static analysis result for SHA-256 06da750ea25e2aef…

MALICIOUS

PDF

87.7 KB Created: 2021-03-06 14:27:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0d32cc69c64134eedda2968d9a53a369 SHA-1: a9082a3354f58044e738e1975fa7e0c4f05c5e9d SHA-256: 06da750ea25e2aef4b32f22279599fe886430343c1f5ea5e5884fee0beeaa9f4
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://ponafet.ru/123?utm_term=how+to+install+toto+washlet+sw2044 PDF link annotation
    • http://wutoxurusot.iblogger.org/hound_of_baskerville_sherlock_holmes_character_sketch.pdfIn PDF document text
    • https://gopikuximodel.weebly.com/uploads/1/3/1/3/131384340/wigar.pdfIn PDF document text
    • http://pezisafepogux.22web.org/synaptics_touchpad_driver_lenovo.pdfIn PDF document text
    • http://cardio-natural.info/26982219337od9kq.pdfIn PDF document text
    • http://lightly.store/pakumugavewuderutusamifr3znb.pdfIn PDF document text
    • https://cdn.sqhk.co/kebubupoxiz/Sm1K4zN/my_t_mobile_account_number_and_pin.pdfIn PDF document text
    • http://xuxikanewojolaj.22web.org/gibuzirugopivoretiliser.pdfIn PDF document text
    • http://gusanod.22web.org/6987637937.pdfIn PDF document text
    • http://besemafobekilir.22web.org/42693215077.pdfIn PDF document text
    • https://netiwililisal.weebly.com/uploads/1/3/5/3/135398280/kekolesame.pdfIn PDF document text
    • http://omoikiri.info/ruptured_intracranial_aneurysm_guidelines05d4s.pdfIn PDF document text
    • https://cdn.sqhk.co/luwonowuwig/Q7UiftK/zaxawu.pdfIn PDF document text
    • http://easycreditscore.info/mcent_browser_for_pcggpbg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4746bcae-698f-49d7-9793-166b21a0c1f0/dungeon_master_5e_screen.pdfIn PDF document text
    • http://rupatal.epizy.com/formen_fr_cannels_de_bordeaux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f595b47-8c5e-4386-9ec4-189c6a8f1808/how_to_determine_molecular_geometry_and_shape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f69efd79-94e0-4fc1-b9aa-ddef5e1d9526/50933387059.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/917abb1c-a6cc-4f6a-acca-9359a40754cc/biwofojosas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa6ebeab-5775-4586-b6a5-87230f19a4d1/48079843801.pdfIn PDF document text
    • http://sozazavore.rf.gd/gmat_unofficial_score_report_sample.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_off00011974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11974 5092 bytes
SHA-256: 361f3aa3fa93495ad21a5c26b0f4a40bbf3165fd840e6882982d4cfd8ad3ffe9
font_01_sfnt_off00012ad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AD5 11744 bytes
SHA-256: a0fe0097ba516e71b0cf7487f382be0257635a456aadde60b1e63b3ddb2079f2

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