Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b9bca92101ccefb…

MALICIOUS

PDF

221.4 KB Created: 2021-03-17 13:27:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a901092e8d5d29bf22256da7a062cbd SHA-1: ac057be2366f9f850a104d5d30d18a6c47d2ac66 SHA-256: 2b9bca92101ccefb2ed35bfe8854ad2f1a28d586fefc9e1558e13498aed3365e
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an embedded URI pointing to a suspicious domain, which is also listed as an IOC. The document body, though heavily obfuscated, suggests a lure related to an installation manual. ClamAV detection and ML classification further support its malicious nature, likely as a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=excalibur+remote+start+installation+manual
    • http://fresh-ita.space/quantum_field_theory_physical_meaningmz0oo.pdf
    • https://mebijanuwirat.weebly.com/uploads/1/3/4/0/134042853/bekuvamasivazi.pdf
    • http://qwonder.space/causes_of_the_french_revolution_dbq_ap_eurosdibv.pdf
    • https://fitijozis.weebly.com/uploads/1/3/4/3/134372299/loluku_rewutuxitufidow_pesirobuvoniv_lidetexesexif.pdf
    • http://lamovingcompany.com/craftsman_shop_vac_filter_17816_ace_hardwarexbx5f.pdf
    • https://fobuxowomi.weebly.com/uploads/1/3/4/2/134235628/6181188.pdf
    • http://storedubai.shop/81016561798b0q1b.pdf
    • https://godosofebi.weebly.com/uploads/1/3/4/6/134651625/vorobemaziwola_rurinosulizela_limitimoborafix.pdf
    • https://cdn-cms.f-static.net/uploads/4463286/normal_604a60abe31d4.pdf
    • https://cdn-cms.f-static.net/uploads/4372982/normal_604ad91b29bee.pdf
    • http://avit0.pro/flip_or_flopbun2d.pdf
    • https://cdn-cms.f-static.net/uploads/4404727/normal_60492339c2caa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://nusaruzedawuw.rf.gd/high_calorie_indian_foods_to_gain_weight.pdf
    • https://uploads.strikinglycdn.com/files/7f1d9d10-52dd-46e9-ad0a-575178cf0cef/88546279567.pdf
    • http://femasusatatovet.epizy.com/injustice_gods_among_us_free_pc.pdf
    • http://zepotusetazokor.rf.gd/beterobilej.pdf
    • http://lesuzikabe.epizy.com/blank_workout_calendar_template.pdf
    • https://uploads.strikinglycdn.com/files/277e22fe-7593-4175-b85f-68483ac799fb/diccionario_biblico_reina_valera_1960_gratis.pdf
    • https://uploads.strikinglycdn.com/files/6fb4b4e5-b694-4f50-9940-c04b070e0983/16882466276.pdf
    • http://reluwiz.epizy.com/monster_hunter_world_arch_tempered_nergigante_guide.pdf
    • https://uploads.strikinglycdn.com/files/c7ebd5d7-a314-4167-b72c-d24148dd2780/how_to_calculate_interior_and_exterior_angles_of_polygons.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003034b.bin
0141dd3f06d4cd8dd2836db9f96d63e2eba30543536c0a750852f676653ff6ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3034B 4992 bytes
font_01_sfnt_off00031425.bin
c6d734e90f55c8ec8797a6d8e0138708b7c13b13f1228e1e9ae0bb8aabf48ae1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31425 14192 bytes
font_02_sfnt_off00034236.bin
713933360072c9d59346590fad668f98c3603c6d2b72ed941ce85481f6af0b74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34236 16060 bytes
font_03_sfnt_off000356c8.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x356C8 4324 bytes

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