Malicious PDF — malware analysis report

Static analysis result for SHA-256 b82d3252128fb854…

MALICIOUS

PDF

117.9 KB Created: 2021-03-06 13:04:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 357d18c959187badab340303cdafe423 SHA-1: 246442cb2a25c90970200aebea86259c43438c70 SHA-256: b82d3252128fb854eefcd6774e142a3d475a6aa75e9001201f44d90089116b7e
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site for further exploitation. The document body, though heavily obfuscated, appears to reference 'Nra gun range safety rules', suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/123?utm_term=nra+gun+range+safety+rules
    • https://negowuvezesat.weebly.com/uploads/1/3/4/8/134859399/4454173.pdf
    • https://kipunelikerave.weebly.com/uploads/1/3/0/9/130969086/sivizujenemetunura.pdf
    • https://cdn.sqhk.co/bobimugura/4ggKujj/8661542502.pdf
    • http://fotubobuwenapu.scienceontheweb.net/why_is_my_smoke_alarm_chirping_after_changing_the_battery.pdf
    • http://porizaritofo.mypressonline.com/metal_gear_solid_3_pcsx2_settings.pdf
    • https://cdn.sqhk.co/rubogomuweme/dNqxhdf/53218872427.pdf
    • https://cdn.sqhk.co/gebemiwisero/jRYWwhh/turbo_racing_3d_game_hack_version.pdf
    • http://xuxetosufuzo.getenjoyment.net/saram.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://labinugekifuv.rf.gd/hdfc_home_loan_application.pdf
    • http://zasufogokalo.rf.gd/53943184127.pdf
    • http://zijodere.rf.gd/73385119764.pdf
    • https://uploads.strikinglycdn.com/files/ef440b9e-4cf9-4881-9a39-05fa6318af32/lekufeg.pdf
    • https://uploads.strikinglycdn.com/files/42a8ed78-1386-45c4-adee-beb14b76ca7c/dapple_weenie_dogs_for_sale_in_texas.pdf
    • http://fomixododib.epizy.com/klipsch_promedia_2.1_user_manual.pdf
    • https://uploads.strikinglycdn.com/files/d92e90fb-13bb-448c-91f5-9645d6ccba19/46582555675.pdf
    • http://godarujugil.rf.gd/rowowug.pdf
    • https://uploads.strikinglycdn.com/files/0ed15d7d-e922-4e64-97e3-78b168b32899/the_great_cosmic_mother_wikipedia.pdf
    • http://nowavef.epizy.com/boat_bill_of_sale_form_ny.pdf
    • http://vufatemosoduv.epizy.com/side_menu_ecommerce_template.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00018d3b.bin
874e8de4e2dd5844276bc1afe39d8f6c08d47b96f29272c33922bedb1babb3bf		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x18D3B 27136 bytes
font_00_sfnt_off0001570e.bin
506115d524b0049b9405f7d88f2521a4755f30d015a33369f836165ce84c2732		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1570E 4732 bytes
font_01_sfnt_off00016738.bin
b8ae485100f6fee98cbd24481ab72678dd34e0b60610df8e37a1b17b45e01e27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16738 11064 bytes
font_03_sfnt_off0001bbae.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BBAE 4324 bytes

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