Malicious PDF — malware analysis report

Static analysis result for SHA-256 af00f0743b023a96…

MALICIOUS

PDF

98.2 KB Created: 2021-03-23 20:53:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae189fa22fb77aba122d73bb3a38329f SHA-1: 53f34b01791bf84ae3d21ec3d8aeb77a084c2331 SHA-256: af00f0743b023a96168c57751f5edf8468ed59dfb6bcbd1b2bb2a967c9c21733
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to 'https://druttle.ru/wix?keyword=tera+gunner+guide', which is likely a phishing lure. The document body, though heavily obfuscated, suggests a 'guide' context, reinforcing the lure. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

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://druttle.ru/wix?keyword=tera+gunner+guide
    • https://cdn.sqhk.co/lubometusoz/oSVhjAD/hallmark_channel_everywhere_app_cost.pdf
    • http://dektesheff.xyz/css_inherit_from_another_stylesheetlpt9n.pdf
    • https://cdn.sqhk.co/vomikigiw/fjgjcie/infirmiers_anesthsistes_formation.pdf
    • http://vas-rem.ru/queen_of_hell_mark_alan_smith0ib1x.pdf
    • http://idslim-italia.site/oyeronke_oyewumipg5zk.pdf
    • https://cdn.sqhk.co/pozazoji/Fjaggjb/bowling_christmas_party_invitations.pdf
    • http://ndfnasg.xyz/nabaxiketugefikekeketj7tx4.pdf
    • https://cdn.sqhk.co/pixafosabow/cuhcjjg/pomaxepevugo.pdf
    • https://cdn.sqhk.co/xigofidiw/2bidygc/oxycare_pulse_oximeter.pdf
    • http://nout-prodat.site/kokixiruzoezuvu.pdf
    • http://www.essentialmana.com/gunner-pve-guide/��
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rabelame.atwebpages.com/kalnirnay_calendar_2020.pdf
    • https://uploads.strikinglycdn.com/files/d11c434a-ecfa-4980-bd9c-c53ee6bf1616/64681614411.pdf
    • http://xiwexuxe.atwebpages.com/wunidemesetajevima.pdf
    • http://kilizamigikulut.epizy.com/review_sheet_mask_innisfree_untuk_bekas_jerawat.pdf
    • https://uploads.strikinglycdn.com/files/53c80c30-6775-40a1-ae47-3654a5a810f9/how_to_fix_a_jammed_shredder.pdf
    • https://s3.amazonaws.com/mijumomub/misozuru.pdf
    • https://s3.amazonaws.com/wudibirewuduto/88673723306.pdf
    • https://s3.amazonaws.com/palevijuj/arumugam_video_song_hd.pdf
    • http://gutazerabudapa.epizy.com/xalozafumijoxa.pdf
    • http://ziretedok.rf.gd/wireless_headphones_for_lg_tv_india.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_off00012d95.bin
0d2c8f45603914d64d20968fc79792011110e9ff92604a3e04cd2634310f6ce3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D95 4732 bytes
font_01_sfnt_off00013dbc.bin
5b93b791855da68ab401ac319eb6c80d58378fea290d1cbf025167db71ee6989		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13DBC 11420 bytes
font_02_sfnt_off00016480.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16480 16204 bytes

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