Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f6b7bf4d7630925…

MALICIOUS

PDF

114.2 KB Created: 2021-03-03 01:23:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: f6247e82c64889e9b87a2dcd29bc33fd SHA-1: 6e3fdf563d4f5ae034e73c996d45012d1ce90783 SHA-256: 3f6b7bf4d7630925b0d0bd02156a43436002d6ebf128effb23f6b8dc07e3ee1a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a word definition, aligning with phishing tactics. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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://lozipotod.ru/strik?utm_term=what+does+the+word+magus+mean PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372967/normal_6039289c3750c.pdfIn PDF document text
    • https://cdn.sqhk.co/surofowudula/lAjfLjc/lamborghini_song_neha_kakkar_lyrics_in_english.pdfIn PDF document text
    • http://miravatiz.22web.org/97527669551.pdfIn PDF document text
    • http://dnepr24.info/38833334469cwm8z.pdfIn PDF document text
    • http://cloudplay.xyz/gusemedimexofoniwubilat1sob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478926/normal_5fe4c19462e58.pdfIn PDF document text
    • http://ens-pictures.ru/wabozabazipigexojiwe55fe6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383572/normal_6036aea2497bb.pdfIn PDF document text
    • https://cdn.sqhk.co/nivabetaz/Rsjbijf/nonstop_balls_mod_apk_download.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/5836484798.pdfIn PDF document text
    • http://najunanewoji.rf.gd/86489941051.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/agusta_case_chargesheet.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/barate_kannada_movie_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/guided_access_app_unavailable_iphone_7.pdfIn PDF document text
    • http://rizujatevozax.rf.gd/diy_earthing_sheet.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 10

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off000138f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x138F7 14852 bytes
SHA-256: 4080595ab2dd41c2424fd2c86f7c0e5b284df63a460278e25e7ff398725cfe26
font_00_sfnt_off0000e2ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BA 7516 bytes
SHA-256: f221c0363826275a576f26f14544d53505ad8c91a80c840871110a3b055e501f
font_01_sfnt_off0000f569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF569 5184 bytes
SHA-256: a9477ae4e62b2dfdbfc1286b2674e665c327a1abadce31e9b4408a192fb0da45
font_02_sfnt_off00010774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10774 5312 bytes
SHA-256: 1c0654ccd5752f89071ff5a7cf0a24f85d1d9ad071c677be56d860e2485513e5
font_03_sfnt_off0001196d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1196D 2656 bytes
SHA-256: c206ac4eca120f096112d408dff6b33a2f721090936d80486df636e1cd240fde
font_04_sfnt_off00012473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12473 2328 bytes
SHA-256: 3702365b3034b9d7945da23b991b5e2ac3f8bb06d1ba3be7e5ba1b5d8dd48c9f
font_05_sfnt_off00012f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F2A 2108 bytes
SHA-256: e66bd646ff29f48b94a898642357a1d5295b77faffa0bd70eb77acb4aebc9a97
font_07_sfnt_off00016300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16300 16688 bytes
SHA-256: ea4389ddff58cd20ba49d324f88d86b77ffc1372d840d20a540574cc15d39db1
font_08_sfnt_off000194b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x194B8 16652 bytes
SHA-256: f621a650ce5612d7d34ad4a305dc081f92462961aba061ec77ea3a57534fcaa4
font_09_sfnt_off0001abe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ABE7 3276 bytes
SHA-256: 51c1d5fa29146058fbc649eac7766b85490f6942bd67486bd14cc46e9087474c