Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bd560d802274993…

MALICIOUS

PDF

68.1 KB Created: 2021-03-19 15:58:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71fa894c9315592785a19194600eb1f1 SHA-1: 723c3be7763b509f55df98846ff46190990fb26a SHA-256: 4bd560d802274993d40c54fb2171c707779e5e870f451fb1c937b50719f1b427
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an external URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, appears to be a lure related to health and safety guidelines, likely intended to trick users into visiting the malicious URL. No scripts were extracted, but the presence of an external URI and the high confidence detection scores indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/strik?utm_term=health+and+safety+guidelines+covid+19+philippines
    • https://cdn.sqhk.co/jaxofudaz/GJ4zyhb/halloween_stores_near_me_party_city.pdf
    • https://cdn-cms.f-static.net/uploads/4458125/normal_5fd9267bc340f.pdf
    • https://static.s123-cdn-static.com/uploads/4390381/normal_5fefc2431a2ae.pdf
    • https://cdn.sqhk.co/norumuwapa/phjjcii/ark_survival_evolved_pc_cheats.pdf
    • https://cdn-cms.f-static.net/uploads/4425917/normal_604a62322de1e.pdf
    • https://cdn-cms.f-static.net/uploads/4381340/normal_5fdc4579d4e99.pdf
    • https://cdn.sqhk.co/dinigivo/cjzyMAi/totevakezugati.pdf
    • https://cdn.sqhk.co/wibezudak/jPL6jTq/non_prescription_halloween_contacts_near_me.pdf
    • https://cdn.sqhk.co/xuxodokoju/wkNEoia/fuxajivesexomowatinaj.pdf
    • https://static.s123-cdn-static.com/uploads/4407777/normal_5fc745afb8976.pdf
    • https://cdn.sqhk.co/gederanew/cieoHgh/moon_patrol_arcade_game_online.pdf
    • https://cdn-cms.f-static.net/uploads/4446924/normal_5fd1579e2474e.pdf
    • https://cdn.sqhk.co/tabuguran/bKjfzgj/woodshop_clarkston_kid_rock.pdf
    • https://cdn.sqhk.co/mitugejaxel/gxRZygd/clashnessie_tiny_house.pdf
    • https://static.s123-cdn-static.com/uploads/4366664/normal_5feb4769a0f2a.pdf
    • https://cdn.sqhk.co/reriwoduriju/1gjYLKd/70005408343.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/86e67f52-14d3-46e1-9e0c-257ebcee2dd9/how_do_i_setup_a_spectrum_remote.pdf
    • https://uploads.strikinglycdn.com/files/b5e9c817-9543-4e59-8cd9-0580071f36aa/natoxotuwufumevafobuvara.pdf
    • https://uploads.strikinglycdn.com/files/d241d9be-4b23-4dcb-87c1-f8b2d273f29d/basic_kannada_words_in_english.pdf
    • https://uploads.strikinglycdn.com/files/6157b151-b4bb-4c06-8dde-7a2f7ba13a34/86490945017.pdf
    • https://uploads.strikinglycdn.com/files/8a6a3cb9-3999-4aa2-923c-309b224dd856/the_secret_life_of_pets_3_cast.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000caa6.bin
0299f1aebea71b03287a748361dff3263a6082f8b538591f4ddf1a36057964e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA6 5652 bytes
font_01_sfnt_off0000ddf7.bin
67ddfd01f0ab273022fe0f9b4960144ef7eb89e3614904318e9bfd777c0d2c00		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF7 10904 bytes

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