Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b4fcdde8de19df…

MALICIOUS

PDF

70.7 KB Created: 2021-02-04 09:52:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e7f6d780a56efc8bf507a36537c4141c SHA-1: 24e8b62ad52acf593baadef6b0b8530c9ff30997 SHA-256: 96b4fcdde8de19df4489b71b65b5ef984814dfacee0084710b50bfa15e7f2e9d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into navigating to a malicious site, potentially leading to further compromise.

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://maypoin.ru/aws?utm_term=sports+physiology+books+free PDF link annotation
    • http://goodsun.fun/phonics_worksheets_grade_148s4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407102/normal_5fdc41183a561.pdfIn PDF document text
    • http://servicesforsupport.com/84230354592qrwx1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416512/normal_60152275ed11b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375891/normal_5feb6040e2f4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393763/normal_6006a15bb2f30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456663/normal_5ff90720eadac.pdfIn PDF document text
    • http://lg-copyrightforms.com/converting_customary_units_worksheetc5oku.pdfIn PDF document text
    • http://shishkin-seed.xyz/56381193843zqczc.pdfIn PDF document text
    • http://umkatrade.ru/gateway_b2_workbook_2nd_edition_answersmquy5.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/jijari/84962143966.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/chicago_pd_episode_guide_season_1.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/smadav_anti_virus_2019_free.pdfIn PDF document text
    • http://zovisidoma.epizy.com/14109469407.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/86790572770.pdfIn PDF document text
    • http://kunizifafam.epizy.com/atmel_studio_6_32_bit.pdfIn PDF document text
    • http://bomepexajusopa.epizy.com/99690204219.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/51321906588.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/51481431027.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/xegezewosa.pdfIn PDF document text
    • http://selifesupenikiv.epizy.com/pozubim.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_off0000d658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD658 5364 bytes
SHA-256: 2ea715b16585a10c1f167818f7bbf0fd4f0a0abc0ef6d71ae3cde36de400b60a
font_01_sfnt_off0000e898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE898 10472 bytes
SHA-256: f55f718ffdfdf4caec046453c733664e43660a13219e67142c5387e1cce2a41a

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