Malicious PDF — malware analysis report

Static analysis result for SHA-256 020b6afd4f6783f4…

MALICIOUS

PDF

68.6 KB Created: 2021-05-21 05:26:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78a0db02a728ada505fa7b18a691501e SHA-1: 894d3b40da6409bd8cc31e68a546e023bf6d23fc SHA-256: 020b6afd4f6783f441c42f0a690bff829be9c860daf724c8078662794b84cb92
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document identified as malicious by a ML classifier and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to technical diagrams.

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://jumiwimov.ru/strik?utm_term=diagrama+de+moeller+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383680/normal_5fe3f8e9d60df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369182/normal_5fdb28e921005.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_600bbef45ff73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377662/normal_600057c1c10c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493890/normal_6065095666547.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425533/normal_6057fc8809657.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452193/normal_5fe38a10a4630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375204/normal_6051e24135e63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495860/normal_6063df0f49e3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413564/normal_6006e3044f018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468261/normal_604a18c0bc060.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://s3.amazonaws.com/rotowan/20511867108.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/toyoset_omni_230_kerosene_heater_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/arctic_king_3_in_1_portable_air_conditioner_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/tababifogukusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be28ef67-af88-42ab-a9a2-5f22be93cb25/hp_6500_printer_paper_jam_error.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/62929851105.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ce84ecf-df17-4795-8bbe-e026f14f90f5/jununujitubitupeb.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/40795372959.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_off0000c223.bin
0bf07a4683fec4584321fa16910b8f32591bd3e69e196a7caa20a23bc255f3dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC223 4784 bytes
font_01_sfnt_off0000d264.bin
df5a644db81c5b0b601f47f4cc3f44272ba21e29569904ac9153b36e560de30b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD264 10744 bytes
font_02_sfnt_off0000f576.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF576 4324 bytes

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