Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea4495c8f5563d16…

MALICIOUS

PDF

78.2 KB Created: 2021-05-01 13:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b0060960376f2d8d025126901a63fc10 SHA-1: 04a0440a256476087db7fbc943796a39a9a36df2 SHA-256: ea4495c8f5563d16ddec9c364a2d6c7244180f3a164c34ae5ab9304a3d832ed0
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, contains keywords that may be used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/strik?utm_term=factorytalk+view+se+me PDF link annotation
    • https://cdn.sqhk.co/bidomutarili/tjiphht/green_party_california_2020_endorsements.pdfIn PDF document text
    • http://8gusevshop.website/203248304939n2uz.pdfIn PDF document text
    • https://cdn.sqhk.co/nawakema/Cwtifjd/synchrony_car_care_card_review.pdfIn PDF document text
    • http://natural-shop.info/43182589001zv782.pdfIn PDF document text
    • https://cdn.sqhk.co/naluloli/hfjcgcb/nunezamutop.pdfIn PDF document text
    • https://cdn.sqhk.co/dexasubu/hiM6DrN/gridtm_autosport_online_multiplayer_test.pdfIn PDF document text
    • http://ledivezakaw.iblogger.org/disadvantages_of_liberalisation_privatisation_and_globalisation.pdfIn PDF document text
    • http://masozaxo.22web.org/what_is_another_name_for_a_breakfast_nook.pdfIn PDF document text
    • http://mainsale.info/busedosebinovanarikifbhfjx.pdfIn PDF document text
    • https://cdn.sqhk.co/xumelesep/iijjhjn/my_talking_ginger_2_download.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/ganubatebedoxez/zodewazamagebifixini.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/nunisifasijomazar.pdfIn PDF document text
    • http://kasanuvuwa.epizy.com/drama_korea_romance_bonus_book.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/dodge_challenger_rt_manual_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d265df6b-e437-4928-a478-2b194ce49f81/3246763529.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/media_player_classic_free_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b170de7-3ee5-41df-8128-ac97bb7360c1/26918628427.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/kuvozadajevok.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_off0000ec20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC20 5220 bytes
SHA-256: 5ecc0b37efab9bfd414c1a019e1114af19a12ed380c5e901ea012dd6560c4832
font_01_sfnt_off0000fdde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDE 1796 bytes
SHA-256: c9c850e9c351ce199d5e9d1c42a783cd39d33267a74ccb43d8a2fed304f07254
font_02_sfnt_off00010669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10669 10908 bytes
SHA-256: 9dbe408959d464b10584691ab69ab0e6e431d42f9e059857c09eee485631127d

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