Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe7f67dfea0cbfd2…

MALICIOUS

PDF

88.8 KB Created: 2020-12-04 05:40:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 6dc1a676b4d3fabeb3807718f868a972 SHA-1: 2092a6761505f38b14de0996d781e14c8f0a813a SHA-256: fe7f67dfea0cbfd2f07b36266d4abddd7133148ef5b3826a6565f4d5c0397bc2
96 Risk Score

Malware Insights

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

The PDF file contains a URL that is likely intended to lead the user to a phishing or malware download site. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit the user through a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=the+essays+of+ralph+waldo+emerson PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454672/normal_5fc90b9929af8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450727/normal_5fae64d6e9ffb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0fe2417e7202640eab110/t/5fc14031a97599144e254c21/1606500401575/rampage_movie_torrent.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13d0827a199023ab79d37/t/5fc3955e3485235c86352948/1606653279433/rikix.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc376e18139af0376556c03/t/5fc52f20eaf37e3b6443f8b2/1606758177043/djpunjab_mp3_download_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/nissan_forklift_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/chirp_radio_programming.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/xemire.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd2278106e860cb9707235/1606230650384/force__mass_x_acceleration_worksheet_tes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8577fe8a-958c-4576-ba38-53f684a2f3fb/32818085947.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf7ab29c5e26690256bc6/1606219706848/joint_service_commendation_medal_certificate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c00d7d1-5274-4621-8040-c7f78367ff86/wosuzelumijavetof.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/wejobawizuzitiv.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/convert_to_word_online_nitro.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_off00012022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12022 5424 bytes
SHA-256: d49c489ccbe1c2747b4a824e17334b5998faced474b13fec1debc7e31e762392
font_01_sfnt_off00013283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13283 10420 bytes
SHA-256: d23159a18a9c1eb28a36a892bd443bf793594956063c28fba0393be6b938f543

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