Malicious PDF — malware analysis report

Static analysis result for SHA-256 974825e0a1257237…

MALICIOUS

PDF

73.0 KB Created: 2021-01-21 15:51:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cea0a56d1e3fd9c2517c6ed91cdd63bb SHA-1: b4bb9048c0083e631841deb7e31e4044455c8ccb SHA-256: 974825e0a1257237cfa48b24338b8185451290a05c62b7923176359df03e1d16
104 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, indicating a phishing or trojan payload. The presence of embedded external URLs, specifically 'https://trafftec.ru/aws?utm_term=vidmate+video+er+app+2018' and 'http://zavudonalu.66ghz.com/47530774354.pdf', suggests an attempt to redirect the user to a malicious download or phishing site. The heuristic 'SE_DOWNLOAD_BUTTON' further supports the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafftec.ru/aws?utm_term=vidmate+video+er+app+2018
    • http://zavudonalu.66ghz.com/47530774354.pdf
    • https://site-1261932.mozfiles.com/files/1261932/84839305253.pdf
    • https://site-1176489.mozfiles.com/files/1176489/d_d_3__5_forgotten_realms_map.pdf
    • https://site-1194964.mozfiles.com/files/1194964/20816758551.pdf
    • https://site-1168501.mozfiles.com/files/1168501/tizevaposememidizutawu.pdf
    • http://sizegivip.22web.org/university_of_alberta_medical_school_reference_form.pdf
    • https://site-1178425.mozfiles.com/files/1178425/thrifty_white_pharmacy_dickinson_nd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zukavinu.rf.gd/cheraw_dance_form.pdf
    • https://s3.amazonaws.com/musoxifuvitalo/76138568842.pdf
    • https://s3.amazonaws.com/feseni/jiterunu.pdf
    • https://s3.amazonaws.com/jazuravazaguz/29746396330.pdf
    • https://s3.amazonaws.com/sajatesawodiji/25289989380.pdf
    • https://s3.amazonaws.com/bajuse/libreoffice_templates_cv.pdf
    • http://pisepivowunasi.rf.gd/whatsapp_stickers_link.pdf
    • https://s3.amazonaws.com/lekelepowo/plant_taxonomy_classification.pdf
    • https://s3.amazonaws.com/pesetufavo/48570222729.pdf
    • https://s3.amazonaws.com/rorives/fodomuxevomazago.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_off0000e01e.bin
4277053ebf70feaa3593f4865a2757747b9f1727c4b62730ce9b3536f3180a17
pdf-font-stream PDF embedded font (sfnt) at offset 0xE01E 5440 bytes
font_01_sfnt_off0000f290.bin
c107df4b519dd5564dd5a5bb53e2cc359c1908b754054d99ccfedc856f2d48c4
pdf-font-stream PDF embedded font (sfnt) at offset 0xF290 11060 bytes