Malicious PDF — malware analysis report

Static analysis result for SHA-256 89124e1f74629ee3…

MALICIOUS

PDF

71.3 KB Created: 2021-01-28 12:51:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: cdd63043aadf6d5aafaac1c8ecbd1da4 SHA-1: 5ff0e5b4cc9136a4cc6bd644224ee933cc6e9400 SHA-256: 89124e1f74629ee301fadd9d06991d41b960d354c6eab1fe4b7c6224ad04636d
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to 'flying arrow broadheads' and application metadata, suggesting a lure to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=flying%20arrow%20broadheads PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463794/normal_5fe01501f3c0a.pdfIn PDF document text
    • http://design-kvartira.info/deer_hunting_1993n23ti.pdfIn PDF document text
    • http://ubzvp.com/79123515847w9eio.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454172/normal_600fead9404cb.pdfIn PDF document text
    • http://cocobeautybar.ca/615935932922rrd3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383156/normal_6005496c54474.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367646/normal_5fd5f4036972e.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/lakujusitejojet/ancient_of_days_gospel_song.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/69097537116.pdfIn PDF document text
    • http://jimanujomubil.epizy.com/26699612715.pdfIn PDF document text
    • http://zaxalamel.rf.gd/girlguiding_guide_gold_award.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/barron_toeic_practice_exams.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/hooked_on_phonics_guided_reading_level_correlation.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/59379273278.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/bdubs_nutrition_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/billboard_music_awards_2019_performers_list.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/creditors_balance_sheet_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/21950595527.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/cfo_interview_questions_and_answers.pdfIn PDF document text
    • http://warepeg.rf.gd/deadfire_classes_guide.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_off0000d7b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B6 5376 bytes
SHA-256: f2a6d8f14249c0bb77572dc811f8323570327ea361ac343f381c838c4958a53d
font_01_sfnt_off0000ea12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA12 11040 bytes
SHA-256: f0fd1c65849078ab48ecd96e71ec8b09fe34a00b3dcd0f9796889e3aa559ebce

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