Malicious PDF — malware analysis report

Static analysis result for SHA-256 98e260fe6576cefd…

MALICIOUS

PDF

80.9 KB Created: 2021-02-25 09:31:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: cd9cbf299cd94098d5309547c6ec504f SHA-1: 8b7802d23429c8baba19aab9fc9a10ea24f1fcd4 SHA-256: 98e260fe6576cefdfa62f89aa98c6b435a9b2777b05d2d67e67961f26fd6733f
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI that appears to be a search result for a specific product, suggesting a lure to a potentially malicious site. ML classification and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI point towards a phishing or scam attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/award?keyword=corsair+k95+rgb+platinum+xt+price+in+india PDF link annotation
    • https://fugogifozu.weebly.com/uploads/1/3/4/8/134888696/pulijusivijonepupi.pdfIn PDF document text
    • https://xifexovajebim.weebly.com/uploads/1/3/0/7/130740184/tefiselewokul.pdfIn PDF document text
    • https://nezozavigarej.weebly.com/uploads/1/3/4/7/134727028/91f7cf60f5de.pdfIn PDF document text
    • https://pijafajabivigin.weebly.com/uploads/1/3/4/6/134635516/luxugazasozukatiki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499319/normal_5fc9e9007ebee.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/wexatise-gebiwomegegasij-duzokiwu.pdfIn PDF document text
    • http://monufovaxuj.66ghz.com/lizavukotexogisekokeva.pdfIn PDF document text
    • http://modutomipofa.iblogger.org/mijagowulododo.pdfIn PDF document text
    • http://vazupuvid.iblogger.org/whirlpool_cabrio_washer_and_dryer_manual.pdfIn PDF document text
    • https://sufudavinor.weebly.com/uploads/1/3/1/3/131381021/romawedito_mawezujipabed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495707/normal_601ff6e6547ad.pdfIn PDF document text
    • https://xekawipafamut.weebly.com/uploads/1/3/4/3/134328312/bolulojom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wetevali/top_shooting_games_for_android_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/nerekiz.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/baaghi_3_song_ming.pdfIn PDF document text
    • http://fidomibudirej.rf.gd/ozeri_kitchen_scale.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/12549983262.pdfIn PDF document text
    • http://wowulikuvej.rf.gd/generate_battery_report_windows_10.pdfIn PDF document text
    • http://kikesij.epizy.com/xopetitisinit.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/sepse_neonatal_2019.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF055 5848 bytes
SHA-256: fca23af3551ef14f2b9585a2d738ca13a76c65982687058331e481b56d2f5fde
font_01_sfnt_off0001041f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1041F 10436 bytes
SHA-256: e4894e9aeb87f7b08efa87ec9bb25101c35d8dd6305e895846b567abb04a79c3
font_02_sfnt_off000127de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127DE 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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