Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a0e9aeb5b94594e…

MALICIOUS

PDF

69.8 KB Created: 2021-02-12 10:58:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e617ae1fdb9bc2257bc44910d0091364 SHA-1: d406b8f4147844b74d5df98a5967b94f99436a92 SHA-256: 1a0e9aeb5b94594ed3892e1146431667ad7e189906338f82ef985eb3c96accdd
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'jottigo.ru', which is likely used to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, but the presence of external URIs and the overall detection suggest a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/wb?keyword=guidecraft%20dress%20up PDF link annotation
    • https://bupowuxa.weebly.com/uploads/1/3/5/3/135317106/5212837.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/lbieQX5/54959344675.pdfIn PDF document text
    • https://cdn.sqhk.co/xekejegixawo/cNhbZhi/launchpad_classlink_fulton.pdfIn PDF document text
    • https://sezorataxij.weebly.com/uploads/1/3/4/6/134600708/1556468.pdfIn PDF document text
    • https://cdn.sqhk.co/janonaset/cidhfi1/az_screen_recorder_video_recorder_livestream_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/YjjROgi/39776054159.pdfIn PDF document text
    • https://cdn.sqhk.co/tumupowe/iNXiipq/2831572657.pdfIn PDF document text
    • https://cdn.sqhk.co/lokutibu/idicimx/72073456356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421940/normal_60158957ba80b.pdfIn PDF document text
    • https://doxemikawapuki.weebly.com/uploads/1/3/4/3/134314999/puxademuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/java_runtime_older_version.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/7039470035.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/avery_labels_template_2_per_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/wazudusedipoj.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_off0000d246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD246 5148 bytes
SHA-256: eb6146df387a6d8942b79a38f7bbb206cfb983498575b7c1f4394469b5fa6d5c
font_01_sfnt_off0000e3dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DD 11072 bytes
SHA-256: 24927072eaeec11fefba9d6e7ed948291dd5ab277e66ac7c400f0c01b533e987