Malicious PDF — malware analysis report

Static analysis result for SHA-256 e623cf07bc084e67…

MALICIOUS

PDF

69.5 KB Created: 2021-03-07 15:45:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ee48e0617b4fa97a4d540fd1dde902c2 SHA-1: 89273cea166d5467f3fc8015e298e56bef46a52c SHA-256: e623cf07bc084e67f81ab052a0b731068a0d6bc5f0ec1e23e8c39e6482a547ae
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 0.9620

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://nipisod.ru/award?keyword=how+to+gift+chick+fil+a+points PDF link annotation
    • https://cdn.sqhk.co/ludukuni/ggWhest/soccer_positions_sweeper_stopper.pdfIn PDF document text
    • https://tinedejoditof.weebly.com/uploads/1/3/5/9/135971312/veviwegujezeniz.pdfIn PDF document text
    • http://vexetifiridik.mypressonline.com/type_8_personality_compatibility.pdfIn PDF document text
    • https://cdn.sqhk.co/boxokozofe/idyidLe/73266097066.pdfIn PDF document text
    • https://cdn.sqhk.co/potonefamuve/ieVichx/how_to_make_rainbow_swirl_icing_for_cupcakes.pdfIn PDF document text
    • https://cdn.sqhk.co/bapuwanuvadi/AjcRhg3/13179794514.pdfIn PDF document text
    • https://renokogepebamon.weebly.com/uploads/1/3/2/6/132696434/6832984.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421049/normal_60010737b2d83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392237/normal_5fdb7e8d30011.pdfIn PDF document text
    • https://kupelaranix.weebly.com/uploads/1/3/4/7/134729830/xumuzirurem.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/4d91343c-0cfb-4fce-8e24-07fa9432680a/ball_python_snake_habitat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33bcedd2-1c34-450a-bb59-a2b47cd444b4/1983941202.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/8612673723.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4983d943-dc79-4765-9394-2c5719a7c457/how_to_use_innova_scanner.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/5750259232.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/lock_out_tags_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/mevuraletos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fae88cc8-8fa7-485b-98fd-a079e5f2f999/aprilaire_humidifier_800_price.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/ugc_net_certificate_june_2012.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/poxagalisusepusegeved.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C3 5300 bytes
SHA-256: 72a2d43faf059b54792d93ef88043c1804ffb8d7ed96d3db8bd5a5fc43abebe3

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