Malicious PDF — malware analysis report

Static analysis result for SHA-256 64cf8b743501bbcb…

MALICIOUS

PDF

59.9 KB Created: 2021-02-25 23:35:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: cbcd5bf2023e0c44b8deaf27645da510 SHA-1: 9a22debd534b8d7656d9c01b16770332dd276bc8 SHA-256: 64cf8b743501bbcb06fea7fb1a52aaa7c0146fa317c47fff8b2b353599ae9059
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a resource that claims to offer an ebook. ClamAV and ML classifiers identified the PDF as malicious, specifically a phishing trojan. The embedded URL is likely part of a phishing campaign to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7704

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/award?keyword=the+story+of+art+16th+edition+ebook PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416921/normal_5fc8803b8a32c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486745/normal_601f2c12110ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_601d8108771ef.pdfIn PDF document text
    • http://my-favshopf.online/english_idioms_and_expressionsojg0y.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/kenmore_gas_range_manual_download.pdfIn PDF document text
    • http://prizinsta.online/mibamidesuwufotuluqpal8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373526/normal_5fdeb9f429cae.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/tibanepoxilibud/kibifabunujasaboxoxegez.pdfIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/vabef.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/chemistry_dating_app.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/happy_birthday_cake_photo_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/sigasipewe.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_off0000d146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD146 5424 bytes
SHA-256: b04b00b1e31430aa34e7e17dbcba24073680501a1875c893d88dc6504288ba46

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