Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9882189193422c6…

MALICIOUS

PDF

83.1 KB Created: 2021-04-11 03:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 239e52054fdcbff99b68c60f8b3e6140 SHA-1: 7596e848d7906df58c75797a0bb5881683328185 SHA-256: d9882189193422c619bb21364ee2e65b946d5a11e963168d9490666dcc3d5cf9
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of the primary URLs, 'https://ponafet.ru/strik?utm_term=dish+vip722k+ota+module', suggests a phishing or malicious redirection attempt. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/strik?utm_term=dish+vip722k+ota+module
    • http://jogedisilokazex.iblogger.org/information_about_french_culture_and_civilization.pdf
    • http://remudotufed.22web.org/case_study_research_example.pdf
    • https://cdn.sqhk.co/wokuvaxevaji/dHiaZKr/97537533249.pdf
    • https://kevavakupote.weebly.com/uploads/1/3/4/3/134324476/gidugudup_lidanofeperup_nagavumejo.pdf
    • https://judenebubiz.weebly.com/uploads/1/3/4/6/134656374/pajanemadatidafiza.pdf
    • https://cdn.sqhk.co/pivugisaxap/jYjohdZ/cruise_nation_customer_services.pdf
    • http://juluzenaluziwo.22web.org/metal_gear_solid_5_gameplay_pc.pdf
    • https://xezefamije.weebly.com/uploads/1/3/4/3/134352880/7fb33fbc72e4.pdf
    • https://cdn.sqhk.co/kufejagefep/xsljhhg/scary_escape_room_games_unblocked.pdf
    • https://siwizapetodid.weebly.com/uploads/1/3/4/0/134041585/7090258.pdf
    • https://cdn.sqhk.co/zezinojox/ejgEgjA/sunflower_maze_near_me_wisconsin.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/a54597f1-7e02-4959-b693-5d513cdda35e/zivotakuwigaremozon.pdf
    • https://s3.amazonaws.com/jebokizez/33539560813.pdf
    • https://uploads.strikinglycdn.com/files/7b6727d1-6f69-401f-bcd3-d0d085ed48d0/xisolumi.pdf
    • https://s3.amazonaws.com/muxegeza/ruvofefemebivitipevo.pdf
    • https://uploads.strikinglycdn.com/files/921e019b-05b1-4b47-beda-3647076f8b48/60736665295.pdf
    • https://uploads.strikinglycdn.com/files/53fbe900-ceb4-4c62-bd86-373c17c12537/zukeju.pdf
    • https://s3.amazonaws.com/dujepav/proposal_skripsi_pendidikan_agama_islam_kualitatif.pdf
    • https://uploads.strikinglycdn.com/files/f477e602-9b14-4245-864a-6082daf92693/paint.net_open_source_download.pdf
    • http://zopimubusa.rf.gd/aladdin_ka_chirag_video_song_hd.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f976.bin
2416f5d5a0df4d7087940e11a27a9d29e4422c1b01c07928520af8c74fe57db7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF976 5212 bytes
font_01_sfnt_off00010b47.bin
df3e885adf1279a9210614d35047d91f4cf49d0c40715f220148dc22b8e0ff41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B47 10852 bytes
font_02_sfnt_off00013074.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13074 4324 bytes

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