Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0a6618a4957ad2…

MALICIOUS

PDF

81.0 KB Created: 2021-03-17 07:09:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 678fc9361f9b40e895d691f6c09a7647 SHA-1: ee06186e3ecdf396a21c9f5142980e24456334fc SHA-256: bf0a6618a4957ad27a67961168a2a32a2af06d0a350643fdd1e979a116320757
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan. It contains an embedded URI pointing to 'https://golowaki.ru/strik?utm_term=baby+goat+with+down+syndrome', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Baby goat with down syndrome'. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/strik?utm_term=baby+goat+with+down+syndrome
    • http://gufosizikok.22web.org/pepupoputoxuwedoxidefe.pdf
    • https://cdn.sqhk.co/wokumima/LjajhiP/zerom.pdf
    • https://cdn.sqhk.co/bibikodazit/ejjc4jd/trick_shot_cop_height.pdf
    • https://cdn.sqhk.co/pirujezexod/kiihirb/bowmasters_mod_free_download.pdf
    • https://cdn.sqhk.co/rurokusulos/Pgfgic6/badlands_camo_clothing_review.pdf
    • http://narosisebono.22web.org/judopeselasamopake.pdf
    • http://siwivelijutore.medianewsonline.com/netgear_prosafe_gs108_factory_reset.pdf
    • http://nanebaxexob.getenjoyment.net/enlightenment_now_pinker.pdf
    • http://zimezobot.getenjoyment.net/67570409817.pdf
    • https://cdn.sqhk.co/dolafita/0igjjMd/best_ninja_foodi_recipe_book_uk.pdf
    • http://wofupovuneraja.iblogger.org/52832771987.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/6836b204-2ae0-421f-a73e-449022a7b187/how_to_be_a_real_estate_agent_in_qld.pdf
    • https://s3.amazonaws.com/bizamesuwepe/nuxakolovibokaxufabijenod.pdf
    • http://jatoxat.atwebpages.com/bounded_buffer_problem_in_operating_system.pdf
    • https://s3.amazonaws.com/jupoti/thick_cardboard_sheets_nz.pdf
    • http://kejefutipetube.epizy.com/zurejikavivi.pdf
    • https://uploads.strikinglycdn.com/files/108d3a0b-e187-40fc-8aa1-4c94a70276bc/rcbs_cast_bullet_load_data.pdf
    • http://dinixebun.epizy.com/xalasizoza.pdf
    • http://petirepure.epizy.com/20446448085.pdf
    • http://fazaburifug.myartsonline.com/chapter_13_apush.pdf
    • https://s3.amazonaws.com/fajixe/emergency_fire_drill_report.pdf
    • https://uploads.strikinglycdn.com/files/0f75ecf7-9269-4b30-a198-cf167c8edc9c/34406554190.pdf
    • http://latowetutut.epizy.com/live_tv_apk_2017.pdf
    • https://uploads.strikinglycdn.com/files/34cc2583-3cec-4c7f-b1e8-e2f170d8b780/34847849162.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f179.bin
7bd14ec38934d394850f1d602e9a475d4f9a85b69c1be13ac2c6951c56dac620		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF179 5380 bytes
font_01_sfnt_off00010396.bin
d2852b5d0aea73a14111d94c59f19d54e8a36c9b15e776dedee0fb2e96bc3c94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10396 10736 bytes
font_02_sfnt_off00012834.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12834 4324 bytes

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