Malicious PDF — malware analysis report

Static analysis result for SHA-256 2447dfa8d1ff5227…

MALICIOUS

PDF

72.3 KB Created: 2021-03-09 13:14:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 838b95fe35708237208a0d0e01471941 SHA-1: b111293c5311d30349aa81ae0fc698e1b489b662 SHA-256: 2447dfa8d1ff52273de549b6078a78d518a0caf078faf2730762782928bfd689
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 0.9998

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://midufefew.ru/aws?utm_term=what+is+not+a+capital+budgeting+decision PDF link annotation
    • https://cdn.sqhk.co/belexewuwif/Mjb5icV/wipowodusanurarodu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403540/normal_601fe5ec1e8e9.pdfIn PDF document text
    • http://pewadulojuba.mypressonline.com/12342326786.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377697/normal_602c3c758b9af.pdfIn PDF document text
    • http://xamawigokoke.mygamesonline.org/kubota_engine_spare_parts.pdfIn PDF document text
    • http://warixedivukinat.mygamesonline.org/can_you_have_2_modems_with_spectrum.pdfIn PDF document text
    • http://zatoxuvisovapuf.sportsontheweb.net/fuzebakasapiwidovofajomi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386366/normal_5fff0fe973c18.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/what_is_the_share_of_daughters_on_mothers_property_in_islam.pdfIn PDF document text
    • https://cdn.sqhk.co/fewoxenovof/gVjbgic/xmeye_login_password.pdfIn PDF document text
    • https://rubovumalez.weebly.com/uploads/1/3/4/4/134458479/7736196.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376379/normal_5ff29d58e61aa.pdfIn PDF document text
    • https://jinugavov.weebly.com/uploads/1/3/4/4/134438703/fedejaze.pdfIn PDF document text
    • http://mimivamefigupe.sportsontheweb.net/nowunixevezigevudotab.pdfIn PDF document text
    • https://sovajavab.weebly.com/uploads/1/3/4/0/134041947/9478d6b0f8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421350/normal_5fe2de24a99e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497370/normal_5fdd6a6c04acd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408195/normal_601b4947df102.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuxubakelixuzot.atwebpages.com/shirley_jackson_movie_trailer.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_off0000e063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE063 5392 bytes
SHA-256: c9ab8cf0f9bf82710f72b64c8345b2760345db35146cb0c27d5425919f521e69
font_01_sfnt_off0000f2c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C2 9756 bytes
SHA-256: f208203ba3f1dc32f27bf6f089372504a005bac87ecca7fede83741525855987

Open this report in the interactive analyzer, or submit your own file for analysis.