Malicious PDF — malware analysis report

Static analysis result for SHA-256 66ba074c162e9d71…

MALICIOUS

PDF

72.1 KB Created: 2021-02-13 23:56:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 10b433222d301eb9c5df8dd4560a7298 SHA-1: 214c5a5631fbf0cf4b45609e144f29905c08e095 SHA-256: 66ba074c162e9d71308b411648ed4c11ffdca23de059b1b2617a1460ef65ebb3
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into believing it is a legitimate search result for educational content. The presence of multiple unknown URLs further supports the phishing or malware distribution nature of this document.

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://leonvi.ru/aws?utm_term=mcgraw+hill+physical+science+9th+grade+answers PDF link annotation
    • https://cdn.sqhk.co/derepinejabi/cjaggSr/how_to_talk_with_your_parents.pdfIn PDF document text
    • http://raisinsapp.club/lovebajofajor7xll8.pdfIn PDF document text
    • https://cdn.sqhk.co/purizepore/iihjdqq/14245820179.pdfIn PDF document text
    • http://vereffka.xyz/rudekigozoxczf5i.pdfIn PDF document text
    • http://theboldpantsproject.com/lamborghini_song_320kbps_pagalworlddmrqt.pdfIn PDF document text
    • http://zejufixapoferu.iblogger.org/tatokijavobarabazupum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424997/normal_5fd650afde8af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479921/normal_5fd2cbab58e61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378619/normal_60185130c1409.pdfIn PDF document text
    • https://cdn.sqhk.co/dibidoretu/jhagihc/world_record_card_throwing_speed.pdfIn PDF document text
    • http://kanshoper.site/86041168406cqf9h.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/jopomodilamego/mobile_legends_bang_bang_item_guide.pdfIn PDF document text
    • http://konevimojo.epizy.com/best_ebook_reader_for_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/gerorigopejatelorewiwub.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/68055812182.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/s3_bucket_lifecycle_rule_terraform.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_off0000d74a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74A 5692 bytes
SHA-256: 83572a93564c5108f7a1861a037e92ba54d47dcb1aa33fd34db6a8d71ab05867
font_01_sfnt_off0000eac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC9 11220 bytes
SHA-256: 36de73efbadfe741b6b2dc2b1ffff923273754724c12253b7ea35e3c65fd6421

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