Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b362a70b63cbcc2…

MALICIOUS

PDF

79.4 KB Created: 2021-01-19 12:33:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c0a4320ea827ee154ba8c017dfebe989 SHA-1: 9aac664d724974fe512a7fc35589073c502e920d SHA-256: 4b362a70b63cbcc29c46be0e6454bc8f9d29433e43f7ae8924d960780f94c4e0
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the presence of an external URI and the overall malicious classification suggest an attempt to redirect the user to a malicious site.

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://seumenha.ru/123?utm_term=richard+rohr+enneagram+podcast PDF link annotation
    • https://cdn.sqhk.co/vilomikov/tnjfEE2/33633689979.pdfIn PDF document text
    • https://cdn.sqhk.co/boxokozofe/jhbjh3h/the_trip_to_bountiful_2014_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/wezufunin/ipig98E/tevuludip.pdfIn PDF document text
    • https://cdn.sqhk.co/birofinud/KHJ9Wjh/arcade_candy_claw_machine_game.pdfIn PDF document text
    • https://cdn.sqhk.co/kugugofawaz/ihFtsw0/tofibuligopijubov.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/baritexovopa/example_hypothesis_chemistry_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/99830015265.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/free_merger.pdfIn PDF document text
    • http://bekovomojuto.epizy.com/tegofajoferuj.pdfIn PDF document text
    • http://nolumuj.epizy.com/taresumafixifisosidesuri.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/78368706789.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/rawuvu.pdfIn PDF document text
    • http://jojanotesejivi.epizy.com/bug_out_bag_packing_list.pdfIn PDF document text
    • http://voferumupisefag.rf.gd/52920566433.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/92549645982.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/up_b._tc_form_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/zezetezebosididixapukaji.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/jamoriginosopefikotalu.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/95504049346.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_off0000f8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8ED 5460 bytes
SHA-256: b3c8de333239eba4bcd2c81c60e81c0129aae686e2f3c0d8e646d7714bf4e23e
font_01_sfnt_off00010b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B5B 11140 bytes
SHA-256: 1ea7f02c2a83da6d855b9086d87b0e9612b659ce09c21f45e3b4c27b035f4292

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