Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e8ecc8cdb0b399e…

MALICIOUS

PDF

83.6 KB Created: 2020-11-18 12:15:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: db77a55cf28cf88adc71104b51d2bf12 SHA-1: 780b6eb60ac0e3aedcd0b41646b80f54a6dc1544 SHA-256: 8e8ecc8cdb0b399ef2faab3faec89b59f7173390552227d00c8aaaa18cce92b1
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple external links, with a critical heuristic identifying it as a PDF link farm. One of the primary URLs, 'https://traffset.ru/aws?utm_term=narrative+report+buwan+ng+wika+pdf', is directly associated with the malicious activity. The ClamAV detection and ML classifier further support its malicious nature, indicating a phishing or trojan payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6964

Heuristics 4

  • 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.
  • 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://traffset.ru/aws?utm_term=narrative+report+buwan+ng+wika+pdf PDF link annotation
    • https://ziluxokoker.weebly.com/uploads/1/3/4/3/134392919/9420594.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379489/normal_5f9e4c32dd8e2.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/kriya_visheshan_in_hindi_grammar.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/adopt_an_element_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/porarijosifelubidukitimug.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/apkpure_fifa_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/mekinewerad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e68f1eb-91af-4371-af89-de24cd186b68/61038634058.pdfIn PDF document text

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