Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c45a4f6a1e2a98d…

MALICIOUS

PDF

66.4 KB Created: 2021-02-25 22:10:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d91ac842de5ecf9fa1f7f94c417228b8 SHA-1: 57fe14bd0114feef49cadca7a7c09421fc672cbb SHA-256: 0c45a4f6a1e2a98d661f720e3331d6c45d1a1d759b6c38e945387351f61ba73d
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 URI pointing to a malicious URL, which is likely intended to trick the user into downloading a further payload. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to a manual search, suggesting a lure.

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://jottigo.ru/wix?keyword=watlow+pm6+manual PDF link annotation
    • https://cdn.sqhk.co/ratobomebal/hddgh9K/pandemic_ebt_virginia_september_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/Nge6haz/bagiluga.pdfIn PDF document text
    • https://cdn.sqhk.co/kogoruzojif/fibJhh0/rosuwi.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/30983754273.pdfIn PDF document text
    • https://cdn.sqhk.co/dubutemaruxu/AUljjgc/safari_browser_review_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/zopimoforaja/ajdjNha/free_antivirus_games.pdfIn PDF document text
    • https://cdn.sqhk.co/satidaruxami/jcujbLe/beat_blade_dash_dance_apk_mod.pdfIn PDF document text
    • http://nowofuguvinidaw.iblogger.org/accidentally_in_love_chinese_drama_ost.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/wujodibu/what_is_tsp_account_number.pdfIn PDF document text
    • http://firixafuzive.rf.gd/cinderella_pumpkin_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/hipstamatic_film_guide.pdfIn PDF document text
    • http://watijosanowo.epizy.com/63222447287.pdfIn PDF document text
    • http://tewejip.rf.gd/98123292022.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/zogezagejubikuxez.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/bauchtasche_schnittmuster.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_off0000c90a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC90A 4952 bytes
SHA-256: c70410324a81d00143bbc62c1c16b35b04c26ea43c507bc8f6312e6a70c82884
font_01_sfnt_off0000d9eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EB 10352 bytes
SHA-256: e72d37dd4798ef7eb89a78f94fcba22f5c0031102b26408ee4546f61ee1c70e8

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