Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fff5cd672e18145…

MALICIOUS

PDF

82.4 KB Created: 2021-03-05 17:43:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 0a9fe3520c0c4c5528488f3fd31a222f SHA-1: 38a872a5a3b3e703841a9687fa30b40f39928417 SHA-256: 4fff5cd672e181457e6f93a878220d3e73ec91f6c796fdde746ebdd5519fcea1
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to host a malicious payload or phishing page. The document body, though heavily obfuscated, appears to contain keywords related to games and applications, suggesting a lure to trick users into visiting the malicious URL.

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://maypoin.ru/wix?keyword=dragon+ball+z+evolution+game PDF link annotation
    • http://zalavsky.ru/bipifagedowuj3qymy.pdfIn PDF document text
    • http://questotzvezd.space/lapse_ending_guideu5ent.pdfIn PDF document text
    • http://pisodanijuke.iblogger.org/sample_onboarding_template.pdfIn PDF document text
    • http://brettlockhart.com/76860783894842b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477910/normal_5fe7c801db3ab.pdfIn PDF document text
    • http://italy50wow.pro/dr_seuss_the_cat_in_the_hat_movie_fr80fjz.pdfIn PDF document text
    • http://mivukiwoluwuj.iblogger.org/98688859046.pdfIn PDF document text
    • http://webpost.pro/dobudejasob070qc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427528/normal_5fe64405963c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451210/normal_601c980a4008b.pdfIn PDF document text
    • http://healingtunes.ru/energizer_ps3_charger_not_workingjx6ha.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454163/normal_5fd8ef8f8852e.pdfIn PDF document text
    • http://arbitestpark.xyz/978607334271muf6.pdfIn PDF document text
    • http://top-agent.ru/cuisinart_ice_30bchzc4i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463006/normal_603355edf2f99.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/18122642475.pdfIn PDF document text
    • http://lidudoxodirabi.rf.gd/how_much_are_batteries_for_invicta_watches.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/sample_spreadsheet_for_rental_property.pdfIn PDF document text
    • http://vizepojuduw.rf.gd/96209694116.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/16_ga_sheet_metal_thickness_in_mm.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/poturolovojavexaked.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/77128435750.pdfIn PDF document text
    • http://naditoliwinudev.epizy.com/fufapukizewu.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/kitchenaid_13_cup_food_processor_multipurpose_blade.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/annual_return_gst_form.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_off0000f848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF848 4956 bytes
SHA-256: 17ed903a5ddd38d62e4d8627896f049615f7a6a53286d8bc8b863be67fa24022
font_01_sfnt_off0001091c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091C 10656 bytes
SHA-256: e98f6696c9d5b387654bd239ccfb097c56d13b9099c9edc65ca1f94742c735f2
font_02_sfnt_off00012d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D53 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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