Malicious PDF — malware analysis report

Static analysis result for SHA-256 a660e2466025b0b3…

MALICIOUS

PDF

60.6 KB Created: 2020-12-22 08:28:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 0518af4cad5c38cd3438431ead2a8623 SHA-1: b0d7cf1d3d6b3b01cb6beceaffbea0ec013bcc53 SHA-256: a660e2466025b0b3af6c3d44fe7c9ef80480435f868d08402494f43d2b8bacc3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm designed to direct users to other sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The embedded URLs, such as 'trafffe.ru', are suspicious and serve as the primary means of redirecting the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://trafffe.ru/wb?keyword=online%20connect%20tuftsmc%20melrosehc%20circle%20health%20center PDF link annotation
    • https://zadivodewereb.weebly.com/uploads/1/3/2/6/132683121/7411241.pdfIn PDF document text
    • https://dafizigupiteg.weebly.com/uploads/1/3/4/4/134492389/wotebuxelu.pdfIn PDF document text
    • https://vutizimowunofe.weebly.com/uploads/1/3/4/3/134354130/dexubaredet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc540ed88c99b6d37c3f32a/t/5fc95fe8306caa37b38451c8/1607032809855/oklahoma_state_football_game_today_channel.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6af419698b02c7f4926e3/t/5fccc27df94b6402b217b3d8/1607254653748/ganetapuziripijifi.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/ignou_bpp_solved_assignment_2019_free.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/daxazedepaloduzosufe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe04c78a889042192838477/t/5fe100518d8da1029cfffb90/1608581201870/57046681752.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/torexad.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/44742939892.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/il_bacio_di_arditi.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/mp3_xd_gratis_para_descargar.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b2d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2D6 5148 bytes
SHA-256: ce20beb7d832a3a129c370769aa5ead8d40b2768a73293782f120ac2d0c56ab2
font_01_sfnt_off0000c42f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC42F 9740 bytes
SHA-256: 7ca769af8c62ad6b2a54760712732552116f150b51db5b8f7ee0cdde0ad964f7

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