Malicious PDF — malware analysis report

Static analysis result for SHA-256 32cabd8a2435b566…

MALICIOUS

PDF

65.7 KB Created: 2021-01-09 10:48:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6f26c73340586d0de17b298c0cf1393e SHA-1: 8b2a79f4206d8704d19282b7f13f6f62684d6cba SHA-256: 32cabd8a2435b5666b6a8cdfb46a802444367b7a74f7d60000c1b29e82b93396
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 by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or malware delivery. The document body, though heavily obfuscated, suggests a pretext of providing a 'manual'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/123?utm_term=dca+vantage+instrument+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368977/normal_5fdf6f742873e.pdfIn PDF document text
    • https://niwejipudid.weebly.com/uploads/1/3/5/3/135383293/2e6ceda2.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3731638.pdfIn PDF document text
    • https://xunimolozabipos.weebly.com/uploads/1/3/2/6/132681728/zijuma.pdfIn PDF document text
    • https://xiwapidijiz.weebly.com/uploads/1/3/4/5/134511693/128394a28f99.pdfIn PDF document text
    • https://sozatoma.weebly.com/uploads/1/3/4/4/134484551/703238a8de2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487186/normal_5fcd90ea0c8e7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd46a7c7-991b-4f01-982d-1b7faf727239/96654911400.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/faduj.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/xilomadudebototupexifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e951cf9-bd52-4be4-893b-476fee6900c4/xowogiduzopatizoxinu.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/xizen.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/gold_s_gym_cycle_trainer_300_ci_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/bafg_formblatt_1_und_3.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/63353973616.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/chatal_band_song_mp4.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_off0000c3dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3DD 5180 bytes
SHA-256: a3983aec2e1969c727765506ec91391ed9674ec0ac31641d59f989ad30effd32
font_01_sfnt_off0000d575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD575 10848 bytes
SHA-256: 87376e5d308c6e43c7a9b21554703cc3243121d1a03ceda4c7195585f3b4792f

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