Malicious PDF — malware analysis report

Static analysis result for SHA-256 e82259fe68e7ca14…

MALICIOUS

PDF

69.3 KB Created: 2020-12-18 14:04:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a69dc01a04c3216bec299353f1306e5d SHA-1: 1fe274584e97b7b739f044c5a56ec39329910e11 SHA-256: e82259fe68e7ca1472c05b73b35f9176130461198fb00856fb9d89fe75d5e8f1
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a malicious payload or phishing page. No scripts were extracted, but the presence of an external URI and the ML/ClamAV detections strongly 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://trafficel.ru/aws?utm_term=bonjour+caffe+froth+monet+manual+milk+frother PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404980/normal_5f98f10c9ac29.pdfIn PDF document text
    • https://lufokozu.weebly.com/uploads/1/3/4/7/134755413/091cfc.pdfIn PDF document text
    • https://kapebuzuzevasa.weebly.com/uploads/1/3/4/5/134587117/ragava.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393189/normal_5f9a5cf520028.pdfIn PDF document text
    • https://diwetisaxuj.weebly.com/uploads/1/3/4/8/134875536/2875908.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/guwavivutix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447884/normal_5fd317cf710dd.pdfIn PDF document text
    • 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/muvazi/download_morpheus_tv_no_ads_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/utorrent_telugu_movies_free_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/laravel_number_format_validation.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/uniformly_distributed_load_beam_bending_moment.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50a63c89e1c4b8fd938af/t/5fc7047da038a451bce30279/1606878335215/50058933689.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_off0000c648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC648 5016 bytes
SHA-256: 3431998a5f69615116b7fad6bb189b67e897aa1a4b8e9bc0d26b882a1cd7e72e
font_01_sfnt_off0000d722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD722 10264 bytes
SHA-256: ee82ab578cb5915a36ac587c80f4726bb59d8597d4c12a9d18fbfbd447f7e807
font_02_sfnt_off0000fa58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA58 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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