Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2713646f128422…

MALICIOUS

PDF

68.9 KB Created: 2020-12-19 13:08:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: fac6ab0b4e277868f1d747860ff6d17f SHA-1: 13253c28fbfaa3ca49c9a944cea1aad40cc9dc6c SHA-256: ce2713646f1284228713707693de194a1c4153c758f88e2497b2d87a3ba5a3fd
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for users to download software. No scripts were extracted, but the PDF structure and embedded URI suggest a phishing or malware distribution attempt.

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://traffnew.ru/aws?utm_term=picsart+studio+pro+apk PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vuforewebub/canyon_springs_baptist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17adb593-6a50-4755-8505-d8837b390a25/naomi_klein_this_changes_everything.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f7fbe9fc3622d5227cd2/t/5fc229b0145a8629dcf95246/1606560178765/bacteria_and_viruses_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/august_osage_county_full_movie.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3ac41972c46e3c6a6f1e/1606302405336/how_to_construct_a_frequency_distribution_using_5_classes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd6e2c6d96458361c2338/t/5fc1fce0eaf37e3b64e2797f/1606548705646/tisonijoziwimirowejev.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/45163223780.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57d17d26ff1194f92edd5/t/5fce94d2056bc267f59186f2/1607374034672/zizimagazesafove.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa9697ea-f649-4def-84c5-c4caeb3743b9/mechagon_dungeon_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d22f420-db36-4329-9206-5acb0a987421/joduwebazoxanofalowo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5696860f2895dc1061537/t/5fc7975fa038a451bcf2451b/1606915935579/steampunk_plague_doctor_mask_spirit_halloween.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5E5 4760 bytes
SHA-256: b2c15f5e45b6e0c27e13b891867d5b8aa0998f08774d8f32fe8ca30550ba74c1
font_01_sfnt_off0000d618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD618 10176 bytes
SHA-256: 5499159f6dcc90e26d54a3cfcd5e19b56c01f0fd36edd37e4948ccfbc6b58af4
font_02_sfnt_off0000f8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F9 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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