Malicious PDF — malware analysis report

Static analysis result for SHA-256 192f6498c11d4ba0…

MALICIOUS

PDF

72.4 KB Created: 2021-01-03 05:05:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e5f2a608c0d55b3c753fc47d33fcb740 SHA-1: 992cd7e86fbd903ff16d80324a82ce1840030ff3 SHA-256: 192f6498c11d4ba022b751a7f99eeba032e119833968e61f45c8cb6141fd68ae
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This URL is associated with phishing and malware distribution. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious link within a document masquerading as an 'Energy Australia power outage report' strongly suggests a phishing or credential harvesting attempt.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/aws?utm_term=energy+australia+power+outage+report In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368238/normal_5f89b2820485d.pdfIn PDF document text
    • https://roruzutal.weebly.com/uploads/1/3/4/5/134592711/desusukizupuli.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408701/normal_5f9ffe2144aad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420924/normal_5f980916d78a4.pdfIn PDF document text
    • https://gozerezujokosas.weebly.com/uploads/1/3/4/8/134856803/e195f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485939/normal_5fdeb6477896a.pdfIn PDF document text
    • https://cdn.sqhk.co/ledusefugize/iw4gdOQ/vujosipezotulasajisefez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470825/normal_5fc188e5884ea.pdfIn PDF document text
    • https://cdn.sqhk.co/luwivimexu/gNpjgij/pulse_point_fire_watch.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/fodose/23439188951.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/57445374461.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7c09ccb-6412-417f-9205-df09d36fe196/tejemakudomowos.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/browser_without_vpn_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/icom_ic-7200_mods.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e2e1e6c-def9-4825-add8-6dd5e849f9cf/sedasuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/ck2_germanic_guide.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_off0000dfb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB5 5140 bytes
SHA-256: 9174cf7dcb79996ca5a722e30950697699dee7044b7f44f460d00e3c7cc2afb3
font_01_sfnt_off0000f15b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15B 10288 bytes
SHA-256: 00030b76a45c3ef0d719dfe0c82b613efbc92da6576917efe246631cf0fc1ca5

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