Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ff6984251f12815…

MALICIOUS

PDF

84.5 KB Created: 2021-02-07 21:41:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ad76f340bfeb3f6c1d33c7c0d86e70d4 SHA-1: 203a5f4f583cbc1f3d6ea33fb1639a6969156cd4 SHA-256: 8ff6984251f12815ec776120424e4a8361763e8bf2bc3193a27f8af5179c47a2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to trick the user into visiting a malicious website. No scripts were extracted, but the presence of the URI strongly suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://leonvi.ru/aws?utm_term=balance+druid+no+moonkin+form PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4456687/normal_5ffdcbcc5a0d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458122/normal_5fdb676a4b3b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450355/normal_5ff2d26b1c595.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449616/normal_5fde4f918e417.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473044/normal_5fcf21b80382f.pdfIn PDF document text
    • http://kurewegunopef.66ghz.com/falulozilakit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408983/normal_5ff25c0f8c6f6.pdfIn PDF document text
    • http://vukesis.iblogger.org/99257276765.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nefomojuwet/sediwimexu.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/96694462877.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/filmywap_bharat_movie_free.pdfIn PDF document text
    • http://kuwoguki.epizy.com/slope_intercept_form_equation_maker.pdfIn PDF document text
    • http://ketoxuxun.epizy.com/99136626163.pdfIn PDF document text
    • http://beninoduvewer.epizy.com/casp_comptia_advanced_security_practitioner_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/quantitative_aptitude_tricks_free.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10200 4904 bytes
SHA-256: d3b735560f231ecc5de5b5a81a389cb1401d8d5663250019a2f0a677ab5af63a
font_01_sfnt_off00011282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11282 10748 bytes
SHA-256: 825241478332bfd46876a94b46e1c710760ebc31d3167ed809a15ca6a1aee415
font_02_sfnt_off00013714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13714 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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