Malicious PDF — malware analysis report

Static analysis result for SHA-256 20f7611f925e4863…

MALICIOUS

PDF

70.9 KB Created: 2021-03-03 20:19:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2afc80a15b38178140fa55d13289a748 SHA-1: 5d046485db842c2ad1b2ebcab13a04a640c53986 SHA-256: 20f7611f925e4863d27af71cfd1d95102f5493e8a1712b016555dd3fe8a3c7de
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, with one prominent URL pointing to a suspicious domain, suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, appears to be a lure related to religious music, likely to trick users into clicking the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/strik?utm_term=cancionero+catolico+para+misas PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469104/normal_603893c5cf120.pdfIn PDF document text
    • https://vosikobogoj.weebly.com/uploads/1/3/4/2/134235386/1722459.pdfIn PDF document text
    • https://simisodiguguvig.weebly.com/uploads/1/3/5/3/135324772/5898750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465131/normal_60225fa1770fa.pdfIn PDF document text
    • https://gerasulas.weebly.com/uploads/1/3/4/8/134861388/deforaga.pdfIn PDF document text
    • https://cdn.sqhk.co/regomesu/dhjBuij/xomanedigiz.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/JIUpggC/3384957324.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lanaladu/kojupe.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/daridizulo.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/develop_self_confidence_improve_public_speaking.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/que_es_composicion_de_la_fotografia.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/48946330337.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/salaam_rocky_bhai_full_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/dedadibifofifa.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/jemiverijifuko.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/tibomasu.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_off0000d7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E9 4984 bytes
SHA-256: 42291f57e8fdce9d584beadcf68279df6ded84e8708403b4fbd4ec5b3f8dfce6
font_01_sfnt_off0000e8c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C0 11296 bytes
SHA-256: 278d666dcd4ebf811dbbf5298ff14cdcc5cb7615e500c17dfef24f6ba8fcd3fb

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