Malicious PDF — malware analysis report

Static analysis result for SHA-256 9854020153235455…

MALICIOUS

PDF

79.9 KB Created: 2020-12-27 19:34:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 94da8718d6366cbcb16486b3460a5bb8 SHA-1: 76a142eb956096748ab65ca050b2d46c591103a2 SHA-256: 9854020153235455a8c33e22c45d0000622eb21bfed75e5f15a5cdcfffd8d881
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, with a high risk score. It contains an embedded URL pointing to a phishing domain, disguised as a charitable donation form. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafficel.ru/aws?utm_term=non+cash+charitable+donations%2528+form+8283%2529 PDF link annotation
    • https://cdn.sqhk.co/dorusafe/YJHhajj/14415341823.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482023/normal_5fc6c72c8f950.pdfIn PDF document text
    • https://cdn.sqhk.co/noruwotil/fOhaijW/samikorul.pdfIn PDF document text
    • https://cdn.sqhk.co/jagakutojut/ajaghlw/godidakaxefafulited.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413975/normal_5fdf2de9ab751.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462379/normal_5fe61bce80050.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481999/normal_5fe4d688734d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457590/normal_5fcf789d9b0af.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://uploads.strikinglycdn.com/files/b8f344e8-91f6-45bf-9923-d9fe0c37f375/kuwin.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/50420023161.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26c5e892-f98b-4b66-8bc6-b0730ddae16b/lukuz.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/nigefem.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_off0000ec12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC12 5800 bytes
SHA-256: 7b436c689d9ca6f2edcd31989bbf206f1d86411ff845c07ec6cdb7550fa11aa6
font_01_sfnt_off0000ff9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9C 10824 bytes
SHA-256: 5b491b3b7eda529a67d6834ea947b27934fdec0395e8a2708acaa7ed4abc69db
font_02_sfnt_off00012493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12493 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71