Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d570305e1d5c068…

MALICIOUS

PDF

75.7 KB Created: 2021-03-25 06:53:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: bee7110f8a643dfb61c7ef09043ef85d SHA-1: 9f424d0d53f43e5d287c3dc6062155b33f9e0181 SHA-256: 5d570305e1d5c068d006f46d7bc875e7f2a4244bff775962dbcdc83f04418a28
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for further exploitation. The document body, though heavily obfuscated, contains keywords related to game item prices, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xajibur.ru/strik?utm_term=star+citizen+auec+ship+prices PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4471234/normal_5ffe27ea6fb67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483836/normal_60253ff7e2ea4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457296/normal_5fe8784fca296.pdfIn PDF document text
    • http://jepatugikanoxuv.iblogger.org/installation_guide_arch_wiki.pdfIn PDF document text
    • http://xoxibusu.iblogger.org/9615547840.pdfIn PDF document text
    • https://dakikizubebara.weebly.com/uploads/1/3/4/8/134889455/mexuvesofan-vemonu.pdfIn PDF document text
    • https://dawirusopu.weebly.com/uploads/1/3/2/3/132303146/dilawalegabolepow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://83f018a0-8e49-44f0-b57e-805e464a5f06.filesusr.com/ugd/10a4aa_37ceabf51e4348459c6a0b3d64d40786.pdf?index=trueIn PDF document text
    • http://gebosava.epizy.com/sigufakukon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/679d7426-dae0-4684-9b2f-f8fe4be25cc6/wonefijojuzelebemelejeraj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68b85ec5-ed1e-4a2f-86d6-893851e6eb87/85257872443.pdfIn PDF document text
    • http://janevowox.epizy.com/english_to_afrikaans_translation_dictionary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46f01a30-821b-44ae-a17a-e8513593a0e3/definition_of_seasonal_agricultural_worker.pdfIn PDF document text
    • http://mebexadesojixip.rf.gd/water_pollution_images_for_project.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb99eb83-f1da-4924-8c25-5aae1d7fc96e/what_is_probability_theory_in_decision_making.pdfIn PDF document text
    • http://dekuxibasor.rf.gd/new_john_deere_garden_tractor_prices.pdfIn PDF document text
    • http://jokokitot.rf.gd/18671983720.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fec34215-f8f2-4e71-81e9-fe711fe6b150/quotes_from_the_selection_series_with_page_numbers.pdfIn PDF document text
    • https://0f8fedcd-12c0-4678-86f8-e2bff7269121.filesusr.com/ugd/70e7d4_ddcf3bf9aafd4f3dbe3557cb88d9492f.pdf?index=trueIn PDF document text
    • https://04a9e765-cf69-4035-9b9a-998d8fb4e692.filesusr.com/ugd/8c5016_c248539ae149477bac56cb73aa19b1c5.pdf?index=trueIn PDF document text
    • http://wimosatemegof.rf.gd/tuvaxe.pdfIn PDF document text
    • http://poravilotizeve.epizy.com/21047286894.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_off0000ea5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5C 5140 bytes
SHA-256: 11c6ee72ceb80f9c16f5628e37a97a1e0b996d3624d6a32a17e2e434c3d4f616
font_01_sfnt_off0000fbdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDD 11072 bytes
SHA-256: 61916081b81cba995418a60231f648ab204d0d75ed4eaaca199e23fda29b0e61

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