Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2dfde131483a445…

MALICIOUS

PDF

65.2 KB Created: 2020-12-18 22:23:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: af65c66646692037479d3013e753310e SHA-1: 1578d7df390b0da4d79950ac7fb6441cf56bee98 SHA-256: b2dfde131483a445e5c6b09970b74a13abf3f13f46544a1dea4acbdc0addb08d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://trafffi.ru/123?utm_term=mini+football+field+toys PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460680/normal_5fa22822e5253.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/0971e31e-3a65-4b83-9957-d0a005cd446f/leguporot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a09720e-2d06-4579-9b29-4adf698d40d4/30696855090.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/android_wear_2._0_fossil_q_wander.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/101_bodyweight_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/rojudomeguf.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/bevars_telugu_movie_songs_ringtones_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/57031171459.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d21a2abc-cb7a-49d2-b772-0e040af3ab8f/35657098.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac1425ed-4c53-4f47-ab13-4713297c68f3/57374120567.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/46281827064.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_off0000c433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC433 5052 bytes
SHA-256: 2d8b6384361625a16ab9abc70dc755dceecd07760c6a77c0eb4909787125222a
font_01_sfnt_off0000d589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD589 10116 bytes
SHA-256: 19236e85cad2b3fb72bc546d13daab323d81ced9b8366ae33da993a212823a2e

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