Malicious PDF — malware analysis report

Static analysis result for SHA-256 307bc9fbe0124c28…

MALICIOUS

PDF

64.4 KB Created: 2021-02-15 15:32:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1fa6411089736b7ae60da56aa29b018b SHA-1: b24eca51c293833972814d30bc6132733ee88d0c SHA-256: 307bc9fbe0124c28dc096e47d54f328925ecb88d8937e9d470acb54d20085650
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 suspicious domain. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL is likely part of a phishing or malware distribution scheme.

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://jacksth.ru/wix?keyword=generic+profile+picture+google PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388065/normal_600659772b65a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499979/normal_5fd784cad98aa.pdfIn PDF document text
    • https://cdn.sqhk.co/divojimo/O2hd2LI/77328305189.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378827/normal_5fd5f6c563225.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383923/normal_5fe1abbe94525.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460446/normal_5fff8207463dc.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/jeWieiZ/car_mechanic_simulator_2015_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/lazuxorus/hgggwPb/sims_4_mobile_apk_no_human_verification.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393186/normal_5fd7e3578f822.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/aa8zpgj/vexogenifijonilanorini.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/rizijubovapuk/buy_adobe_acrobat_x_standard.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/genome_canada_funding_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/barter_system.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/tafup.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/coming_soon_page_html_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/nodevafubexusopakepovo.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/recruitment_process_policy_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/kenipokogufufudurote.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/aao_aao_na_baby_song.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/baba_bandook_song_lyrics.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_off0000c2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2AF 4828 bytes
SHA-256: 00d4c21818f7c50d230b81340926db038ad02b80651e0cb5fd37da4ba2ed7ef5
font_01_sfnt_off0000d337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD337 9652 bytes
SHA-256: 89da9794503bc4daa17b781281c845a9da5ef50e974287a12b79a6e564053155

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