Malicious PDF — malware analysis report

Static analysis result for SHA-256 563c09d72a5e863d…

MALICIOUS

PDF

67.3 KB Created: 2020-11-13 01:18:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 165d64de76777fed2eb70501269bc592 SHA-1: 4dd6058b39a89c2a6406b9472f5a42c38f6c0cc0 SHA-256: 563c09d72a5e863df4487a62b58ed67391c87d6d9e5179f8a03a9bb5037f9d7c
154 Risk Score

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'. ML classification and ClamAV also flagged the file as malicious. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a harmful site, likely for phishing or to download further malware.

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
  • 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/123?utm_term=apa+image+citation+maker In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382187/normal_5f8e3f0c93bb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382639/normal_5fad8b198db80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372955/normal_5f9c6fe69e6eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366957/normal_5fa99c0e4888c.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/ae3bdb8e-9aa6-4065-ad42-18abd14eccbf/fuvujafigobotikad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbac9bd7-6306-41cd-b12e-034214664121/68988463384.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a13c8a5-0cf3-43dc-a14e-8ae2004b7183/60492624406.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/92324689270.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/sulezojafaxedifaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/049338d2-f0a7-4a6b-9d4b-bf24234acdcc/62916330746.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/white_pages_corpus_christi_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/jozomaliwepamofi.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/65898834977.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/jspdf_html_to_react.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_off0000ca8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA8F 5096 bytes
SHA-256: 82be3d695142483cd376cb1c69d2e863178eb349e38fb252fc704cb7017e7e34
font_01_sfnt_off0000dbda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDA 11068 bytes
SHA-256: a3457e93778d5349df0faaa8e0e3468f509fe3ed5992ff5415580c60d9080bcd

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