Malicious PDF — malware analysis report

Static analysis result for SHA-256 299ac10e4f3dbbf6…

MALICIOUS

PDF

78.9 KB Created: 2021-03-17 04:26:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 01a8936faf917a59d4bdf1816eb493a8 SHA-1: 6b72f369e3a246b7421727285f85bdc143e08cd6 SHA-256: 299ac10e4f3dbbf623aff9efd69464fe1855580f0a28676fd2c4e8c4afbb932f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://botokaw.ru/wix?keyword=simple+singer+sewing+machine+manual PDF link annotation
    • https://gegiritofizupog.weebly.com/uploads/1/3/4/6/134644009/3961fa6d.pdfIn PDF document text
    • http://zagavexakagin.mypressonline.com/best_reader_app_for_android_free_download.pdfIn PDF document text
    • https://zibataluguxomi.weebly.com/uploads/1/3/1/3/131382491/gaxuf-vonibula-tamonesu.pdfIn PDF document text
    • http://damewumesigalut.medianewsonline.com/analytical_geometry_grade_11_caps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5fdafed7e7e0c.pdfIn PDF document text
    • https://buxexemap.weebly.com/uploads/1/3/4/8/134890763/moxodaju.pdfIn PDF document text
    • http://kesuvajeb.scienceontheweb.net/dnd_5e_best_true_polymorph.pdfIn PDF document text
    • http://luziniwanemek.sportsontheweb.net/padaforetopojipuwuvur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470960/normal_5fdac6d57b98a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468530/normal_60226abfe412b.pdfIn PDF document text
    • http://xatakafigudu.getenjoyment.net/56837182628.pdfIn PDF document text
    • http://mitisavad.getenjoyment.net/55336967656.pdfIn PDF document text
    • http://zagejudivavi.sportsontheweb.net/dan_brown_movies_ranked.pdfIn PDF document text
    • http://worameruvejaka.mywebcommunity.org/85142097584.pdfIn PDF document text
    • http://luxasireku.sportsontheweb.net/wagoregojitod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481409/normal_60334bc5ce1c4.pdfIn PDF document text
    • http://retamos.mygamesonline.org/81433074411.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ef4d4a2-8cd9-4adb-b087-7f5e511845d0/what_will_life_expectancy_be_in_2050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6a51559-4748-43de-b6dd-8b45ea40d11f/panasonic_dmp-bd60_remote.pdfIn PDF document text
    • http://ditanumugagoma.myartsonline.com/spoken_english_book_in_urdu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baf861ad-b355-413d-8ece-1b222337aba6/astrology_predicting_love_marriage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c17a48fb-5d66-4a56-a633-fc011b8e6d66/faxuxigexopu.pdfIn PDF document text
    • http://resilasijajatil.myartsonline.com/blood_type_diet_0_positive.pdfIn PDF document text
    • http://xutenasejubibe.atwebpages.com/autoestima_tipos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6481b702-bd26-499f-b53f-7e04ec952122/96203703591.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/tegumeg.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_off0000f4a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A1 5544 bytes
SHA-256: 52eed6e935ee6639d9bf058f6281932fe881cbf2622e05d15ea07b561b53ece8
font_01_sfnt_off00010757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10757 11484 bytes
SHA-256: 0f966b38eb75533e27ba031bdb66f1bdaea89b545915893afe43bcf38c185ec4

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