Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90972e94e05f35c…

MALICIOUS

PDF

76.2 KB Created: 2021-02-08 22:57:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e0d6112e20641f79d8bcc6b20ce796ef SHA-1: 2b5c709a8fdbb33d2bd31919ca8548aa8ff37a43 SHA-256: d90972e94e05f35c4d3e40f27a94cac4691f4946913eab8f6c4e9fd6f9d4caa2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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/123?utm_term=chapter+8+solutions+acids+and+bases+worksheet+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495550/normal_5fc9be69e307b.pdfIn PDF document text
    • https://cdn.sqhk.co/susojareb/t4Ahggj/donipomufebavoror.pdfIn PDF document text
    • https://cdn.sqhk.co/fusevesapime/GAcjiij/just_smash_it_orange_park_florida.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405184/normal_5fe27f12af809.pdfIn PDF document text
    • https://cdn.sqhk.co/berirenike/jenihYb/dragonvale_breeding_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484632/normal_5ff2c310116a4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392864/normal_5fe04538d0d91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465145/normal_5ffa37db875e2.pdfIn PDF document text
    • https://cdn.sqhk.co/pepitaji/aNJifif/bare_knuckle_fighting_championship_earnings.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381766/normal_6017759e98f37.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/hdM4iLf/make_your_own_music_app_download.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/dojivewobasuval/tanojolasi.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/albumin_human_25_davis.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/47796651166.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/credit_agricole_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/velawiginubuvivanejaji.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/bebop_scale_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/oregon_promissory_note_form_free.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/transunion_deceased_person_credit_report.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_off0000ea82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA82 5556 bytes
SHA-256: 9a7fe22bf2f334d53e14c024d3622a0ebafd56bd946950d42a468b719297b038
font_01_sfnt_off0000fd60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD60 10932 bytes
SHA-256: 2e15c9a3aad178f205a4cec15c46c53a6cb01c8a493b340db59a891fb9b83847

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