Malicious PDF — malware analysis report

Static analysis result for SHA-256 be710fc7e4e90854…

MALICIOUS

PDF

71.0 KB Created: 2020-12-17 12:05:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c4755a40fdd710a10e9a639b91f94967 SHA-1: c440272993aec3394ee4e69f261c71fd3e94b82e SHA-256: be710fc7e4e90854d923833349b708dae068979e6e1072a2386e81c42f039e86
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the presence of an external URI suggests the document's purpose is to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/123?utm_term=adventure+time+pack+minecraft+pe PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465269/normal_5fad5afdd2f3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5fc2d264944f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408720/normal_5f98f95687d9d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407729/normal_5fcace08e7983.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454043/normal_5fa38552b7877.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/pugomonapoxuxe/xopizaxigusidodisobivupef.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/41228063396.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/41014517057.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/expectation_to_the_company_best_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/duck_call_ringtone_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/minecraft_apk_latest_version_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/36654049447.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbceed78bc8713fe6fc5e9f/1606217436250/fixipekomelokezi.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_off0000cbcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBCB 4976 bytes
SHA-256: 8b0379924645d8457baa382ed33314e5daf11b25840fa5249ccfc5ee5e359818
font_01_sfnt_off0000dc9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9F 10552 bytes
SHA-256: 4072545a3b1efad3c298623c5a0ad2d91bedbc709e735a20466fbaec97630b15
font_02_sfnt_off000100cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100CB 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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