Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ef81a4b300cd19c…

MALICIOUS

PDF

70.2 KB Created: 2020-12-20 12:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 24bf75b62211e25437879dbaf68cd034 SHA-1: 310d1cb8736755bf4608899a0372379692ab6cf0 SHA-256: 1ef81a4b300cd19c0e4c802f9fc5675688427bd7feb3d4f3e937560bd6f1d834
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, with the ClamAV detection name indicating it is a phishing trojan. An external URI pointing to 'traffnew.ru' was extracted, suggesting a download lure. The document body, though heavily obfuscated, contains text related to 'Sonic p-06 download', reinforcing the phishing pretext.

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://traffnew.ru/strik?utm_term=sonic+p-06+download PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc7817281da8a590db0efa2/t/5fcdc0ea2fa8bc6bcd08f170/1607319788197/mlb_scores_today.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/192c2ec0-f54f-4ec4-b16b-2937c87dde33/15755324519.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d9ffa20-3399-43de-b189-90498a4a3ce5/butterfly_kyodai_game_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ba3b0a2757459be1f9cb/t/5fc0eeb73485235c86e83645/1606479544384/port_authority_pittsburgh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39a34020-bb07-49e9-b9a9-6e62e02befa8/jokuf.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/call_divert_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/katakana_writing_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d218d928-91e0-42cc-8232-3351d55b3bb2/pidutiwifakibanogax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b6fede1-33e5-455e-af37-7534a6e941f5/hollow_knight_hall_of_gods_nightmare_king_grimm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b27bcc3-5f59-4fd5-bccc-d251270a1a58/xotiso.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/16851984197.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://scripts.sil.org/OFLIn 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC49A 5316 bytes
SHA-256: 896dcd8b037423fefd5688cb13e037d578f121e6ef21676eee6a7f758a2c80e3
font_01_sfnt_off0000d69c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69C 6360 bytes
SHA-256: 80a39db738c12f7fdb7c1ea77e5b2c3e501c8ada782be486ffd938f742fa1549
font_02_sfnt_off0000e63a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63A 11368 bytes
SHA-256: e0f0c6ddaf735b7cf7acdf82d0ab4f8691481c2f3d677f5cd4d9fec02d9f6dac

Open this report in the interactive analyzer, or submit your own file for analysis.