Malicious PDF — malware analysis report

Static analysis result for SHA-256 588d760d1b90a5f7…

MALICIOUS

PDF

72.0 KB Created: 2021-01-06 04:22:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8ea520d02cf90757bac0f367ad73a03c SHA-1: 4784dd6bb8e4b3f46736fe4c40a33b9582ce859d SHA-256: 588d760d1b90a5f7eff4f994cbb506c4dfcb6f4e4e805d3c67ee001e01ed5a7a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of an external URI in a PDF with a malicious verdict suggests an attempt to exploit the user through a lure, likely related to the game mentioned in the URI.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://traffset.ru/wb?keyword=rome%20total%20war%20barbarian%20invasion%20factions%20unlocked PDF link annotation
    • https://cdn.sqhk.co/rolidazi/XSksSAe/kevamumavesadulef.pdfIn PDF document text
    • https://cdn.sqhk.co/rebiguta/d0Twifc/microsoft_flight_simulator_2020_war_planes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479445/normal_5fbb878b63287.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486548/normal_5ff0a3da6f1bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412379/normal_5f9e2468cf588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426676/normal_5f9cbf33b35c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425504/normal_5fb2eccddec1b.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/niwotipugonuvoz/15346263591.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d179f70f-01e9-4878-af81-ad7c1493a102/un_agriculteur_souhaite_raliser_un.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_off0000daef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEF 5532 bytes
SHA-256: 9ac24aa84c1ddceef6f5fa9ebc309a56623a634188a6b90a9aea68a7f250efd0
font_01_sfnt_off0000edc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC2 10900 bytes
SHA-256: 651ea04f9bbe19b7b526420d423f760c428d79a27f81e370d0f50760ce454bf1

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