Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1d4ddb711033de…

MALICIOUS

PDF

91.2 KB Created: 2021-03-10 05:56:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e3744b0a2b334767b1977f8999349ae SHA-1: 19f9bda94ed234b8c030018f512a09da68a32e39 SHA-256: 4d1d4ddb711033dedb39713966fb505c04c538aec2d190cfed59984c5948bfec
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious content. An external URI was found embedded within the document, pointing to a suspicious domain. This suggests the document is designed to trick the user into visiting a malicious website, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://pelibifir.ru/wix?keyword=caridad+del+cobre+prayer+in+english
    • http://hookup750.website/20271681484n3dad.pdf
    • http://stankoff.org/keyboard_ctrl_shortcuts_not_working_windows_102fkxp.pdf
    • http://runmasten.online/little_house_on_the_prairie_the_last_farewell_youtubeq2nei.pdf
    • http://dommasters.site/200422281261xe8b.pdf
    • http://alisabor.design/33651069778wbpp5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wulotugadag/dragon_ball_z_android_saga.pdf
    • https://uploads.strikinglycdn.com/files/aaa64676-7d92-485a-883a-39dc028e008b/45963786161.pdf
    • http://vojapulipono.epizy.com/godafo.pdf
    • https://s3.amazonaws.com/zumomasugipeno/how_to_grease_my_kitchenaid_mixer.pdf
    • https://s3.amazonaws.com/zidenigad/wezadodidobarup.pdf
    • https://uploads.strikinglycdn.com/files/b53fdb16-c70c-41e9-abf4-d5ca6444aba1/my_cuisinart_coffee_maker_is_clogged.pdf
    • https://s3.amazonaws.com/tasufagijaremo/61612882444.pdf
    • https://s3.amazonaws.com/mubemutolewe/how_to_know_if_computer_science_is_right_for_me.pdf
    • http://xanivuva.epizy.com/83858961978.pdf
    • https://s3.amazonaws.com/jinabom/my_singing_monsters_wublin_island_guide.pdf
    • http://jofawapedoguw.rf.gd/6177139980.pdf
    • http://rupadulogoliwid.epizy.com/lagarideva.pdf
    • https://s3.amazonaws.com/risalenefazozo/skylark_hoagy_carmichael_sheet_music.pdf
    • https://s3.amazonaws.com/mufukep/wotejozaf.pdf
    • https://s3.amazonaws.com/vonusirukete/tezexozugetekopox.pdf
    • http://vazefetapo.rf.gd/how_to_use_waterpik_for_tonsil_stones.pdf
    • https://s3.amazonaws.com/difigomisosak/fazifigebijinisamule.pdf
    • https://uploads.strikinglycdn.com/files/1eaf73df-f022-4ebe-9685-a1d99149e631/how_to_start_learning_ai_programming.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_off00012a1a.bin
0825d946a7cc5617cc7c21cdec05b8e9f8e04dbf9155167d3ad11deefcc64fda
pdf-font-stream PDF embedded font (sfnt) at offset 0x12A1A 5484 bytes
font_01_sfnt_off00013cb5.bin
02a859ab1396f8b20aa6637b0bc019c085e90db635e639cef6b4bcfc65963aa2
pdf-font-stream PDF embedded font (sfnt) at offset 0x13CB5 10024 bytes