Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3b3a47dd51f00aa…

MALICIOUS

PDF

75.1 KB Created: 2021-03-19 06:48:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 8ea261aa54a7d87170ecaf00fecb9526 SHA-1: 613fcb3b8e8e9ce642087247a04895ecc6099134 SHA-256: d3b3a47dd51f00aa15506374b53405e0aefb2ade4083d1ba38d21c958cee3ee6
126 Risk Score

Malware Insights

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

The PDF contains numerous links to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a common tactic of luring users to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ponafet.ru/wix?keyword=alcatel+one+touch+phone+instruction+manual PDF link annotation
    • http://good-production18.site/58810146348okiqv.pdfIn PDF document text
    • http://gutprod.xyz/learn_korean_language_online_free_downloadbb67y.pdfIn PDF document text
    • http://idealica-co.site/zakovupefalesowipopomfk3c8.pdfIn PDF document text
    • http://trenketo.buzz/zoboguvipofufeduwopazevix7bx0.pdfIn PDF document text
    • http://padulima.22web.org/pencil_sketch_drawing_step_by_step.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/29652061367r0lcv.pdfIn PDF document text
    • http://uablog.site/86834137655oupmh.pdfIn PDF document text
    • http://vexoxem.scienceontheweb.net/time_and_work_aptitude_questions_with_answers.pdfIn PDF document text
    • http://blaugrana.ru/1410359256mwb4r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6f81cef9-66a2-447d-9e1d-4c0427ef15c5.filesusr.com/ugd/4d935e_0ccba27b61c844579fe88d23e1fa23aa.pdf?index=trueIn PDF document text
    • http://leniwijob.epizy.com/the_development_of_character_strengths_and_virtues_csv_handbook_promotes.pdfIn PDF document text
    • http://kugukokoner.myartsonline.com/are_magic_bullet_dishwasher_safe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9163f2ab-c032-4359-ba6e-157914442d82/west_bend_stir_crazy_82707_bulb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f73352f3-ff6e-4b75-8a27-195af73f72e0/32724725141.pdfIn PDF document text
    • http://xarozitapakegur.epizy.com/30382070523.pdfIn PDF document text
    • https://75ca6b5e-a470-4e0e-8004-b00a9f1721b4.filesusr.com/ugd/1e4819_e2a8fc6702b14c4daee2cc820f70ffff.pdf?index=trueIn PDF document text
    • http://pevogikuxupeja.onlinewebshop.net/hp_stream_11.pdfIn PDF document text
    • http://refowinevog.rf.gd/canterville_ghost_oxford_bookworms.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_off0000e923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE923 5164 bytes
SHA-256: 6bd9429804bffde0300ce73939061fed9b9507337dafc45b0e7c65d152a98ebc
font_01_sfnt_off0000fa84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA84 10712 bytes
SHA-256: 8a12cb99a018e289fa387edd3410a5713ac398266c1a92e99c90ac9d7221b4fd

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