Malicious PDF — malware analysis report

Static analysis result for SHA-256 74558289bd16886f…

MALICIOUS

PDF

65.2 KB Created: 2020-11-20 20:06:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5904000cb4229e087370e4fcae39e2fd SHA-1: eb951251eefb40162609c7d45aced572fe15634a SHA-256: 74558289bd16886f2ceecd3fd4602e7e18ae0889a3cdc67f54b77edca113fb46
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, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references to 'Eclipse mp3 player review' and 'wkhtmltopdf', suggesting a lure to a malicious site.

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://trafffe.ru/123?utm_term=eclipse+mp3+player+review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387811/normal_5f92d16e62cf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370785/normal_5f8a40f43eb52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375080/normal_5faaba4acdb87.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/fda6541f-0361-4c18-892b-6153a4e7d0c3/unimat_sl_lathe_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a22c65a8-e709-400a-b209-86096c19fd0b/shellie_blanks_cimarosti_husband.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd109bb4-32bb-4af2-a075-76242e254727/palmistry_basics_with_pictures.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eea829ca-b06c-49b7-a397-fb60956c0f31/76692791297.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/nudiforudonos.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/31958743487.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/wolufomow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e185f095-2513-4eaf-989d-2226b8358338/lavanuf.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/templates_for_ppt_slides.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/automatic_control_systems_wiley.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_off0000bf1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF1F 5452 bytes
SHA-256: 0c764535a131647e1bc5138514a5c79cefc8452a7ee7034eba1d631437238153
font_01_sfnt_off0000d1ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1AE 11268 bytes
SHA-256: 04e55b848a8b9e1c4975ba7b9b6f6b7ae7a1d14641e9b8d85908c942f2f84c27