Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f457ba0cc3b13a…

MALICIOUS

PDF

76.0 KB Created: 2021-03-23 11:12:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d4a599a5aabdf37b334e9b6380ecb1f SHA-1: aad9558c54f5a518b2709c92eb6c22fd9c42923c SHA-256: 29f457ba0cc3b13a1e729040ef3a163177485af534e5cb7be2340a39439ea6a8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, many of which point to suspicious domains and are likely used to host or redirect to malicious content. The document body, though heavily obfuscated, suggests a lure related to academic materials, likely to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=america+a+narrative+history+10th+edition+volume+1+study+guide
    • https://cdn.sqhk.co/rojarimeg/g4eihnn/78253773477.pdf
    • http://pumba-timon.space/latest_hd_bollywood_movies_2018bfhrt.pdf
    • http://vvvvvvvvvvvvvvvvvvvvvb.xyz/wilukazafoxebidifeligtl1.pdf
    • http://sdfafq.info/9353178242206tic.pdf
    • http://thehensleys.org/simple_email_template_bootstrap3bay9.pdf
    • https://cdn.sqhk.co/nexetifosam/hDfyIuU/real_boxing_2_creed_android_download.pdf
    • http://zagejudivavi.sportsontheweb.net/tooth_arrangement_complete_denture.pdf
    • http://myluckybet.xyz/flight_simulator_x_steam_edition_multiplayerdi030.pdf
    • http://13millions.store/xuxokekaminelolixuawt0n.pdf
    • http://stav-games.ru/how_to_replace_washer_tub_bearingkfbyj.pdf
    • http://phrensy.co/estudios_biblicos_para_nios1k7i3.pdf
    • http://mydenverneighborhoods.com/romeo_and_juliet_text_act_1_scene_5_summaryu3hjv.pdf
    • https://cdn.sqhk.co/woleparos/aoidxbt/84228008647.pdf
    • http://duzixofiwisegi.mygamesonline.org/aquaculture_biosecurity.pdf
    • http://thesimplycompleteseries.com/mercedes_benz_e200_kompressor_2006_manualobkot.pdf
    • http://lologunaw.mygamesonline.org/xobudozegodepupikeduz.pdf
    • https://cdn.sqhk.co/nisavivurefu/aLHhjpW/excel_dim_as_sheet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/luropi/bpsc_pt_answer_key_2015.pdf
    • https://s3.amazonaws.com/welanisowari/pink_floyd_piano_sheet_music_free.pdf
    • http://bitujiduruv.myartsonline.com/47717250231.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d29a.bin
c097368927c0a3974df93ff236e8505d52d6a73353aec9f285e828fb89e0ed31		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD29A 5696 bytes
font_01_sfnt_off0000e5e3.bin
e37f4a1fd493da931025fd92ce029030740a912a1aa7b6d0cbda7bb565a207c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E3 12020 bytes
font_02_sfnt_off00010d55.bin
6049f7be1eb58524b2bfe5e0ab34f4300347f26dbb23ab6ad605e3b0d5647553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D55 16084 bytes

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