Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce34d1450d9465e6…

MALICIOUS

PDF

77.1 KB Created: 2021-03-04 23:42:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: aa893dd4d02463bc918ca99b2307aff0 SHA-1: 296f5272a5ab18e6ddcaaef9633859acd07ada40 SHA-256: ce34d1450d9465e64f658c197d66064dc48ad81e9045e1778223fdfa85bf7c39
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://golowaki.ru/123?utm_term=quality+management+plan+project+management PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4493198/normal_6000511a61d8a.pdfIn PDF document text
    • http://italiahot.space/96419518942dnjqw.pdfIn PDF document text
    • https://farevilifowo.weebly.com/uploads/1/3/5/3/135390938/bexugiv.pdfIn PDF document text
    • http://remont-kholodilnikov.website/jimazewifuk349y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450632/normal_5fdd94818d2a6.pdfIn PDF document text
    • https://tiforunu.weebly.com/uploads/1/3/1/4/131437018/mimaro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463552/normal_5fd67ecfc32a8.pdfIn PDF document text
    • http://kamini33.ru/jejiwopawunojikifo1c3y.pdfIn PDF document text
    • https://vaxevadokipab.weebly.com/uploads/1/3/4/6/134610393/zixodela.pdfIn PDF document text
    • https://wetusaseri.weebly.com/uploads/1/3/5/2/135297966/tawimoguzivu.pdfIn PDF document text
    • http://appletopshop.ru/butterball_electric_fryer_instruction_manuald0o1q.pdfIn PDF document text
    • https://vubumixot.weebly.com/uploads/1/3/4/7/134751696/7334905.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409114/normal_5fc59479b73a4.pdfIn PDF document text
    • http://lianhua.life/travelon_laundry_soap_sheetscelxz.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/kotidox/helioscope_financial_report.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/78272107128.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/77054261483.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/who_is_the_most_popular_kpop_girl_group_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/does_ipod_7_support_wireless_charging.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_off0000f1d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D0 5312 bytes
SHA-256: 72c1a04e576905dfdc4f978394d573e3be621dfd4701c8e50889eb040ab0abd0
font_01_sfnt_off000103df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103DF 10268 bytes
SHA-256: c70ab83980827a66fd18228892b76783bc2f6a5012d916f81683afaa4a0efaf4

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