Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a2bc843f48ba796…

MALICIOUS

PDF

75.4 KB Created: 2020-11-23 06:41:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 443990595f1eb50df9fc9a7c108ff4a5 SHA-1: 214baf69c629eb30f7b1de821249d210b3592785 SHA-256: 3a2bc843f48ba7963a389308fe65a4582deecfeddaacbc0e9a3d5f40279e02fa
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://traffking.ru/aws?utm_term=sony+android+tv+4k+movies PDF link annotation
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/1d1f8ecc085ca.pdfIn PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/pozatotiw_zozuroda_mekedafuzi_gusavadof.pdfIn PDF document text
    • https://sujexixapobitu.weebly.com/uploads/1/3/4/3/134328704/xiduza.pdfIn PDF document text
    • https://votarozoxanobo.weebly.com/uploads/1/3/4/3/134315144/xowaxotakezi.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/bejenosugede/terugokime.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/fivisugedogod.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/gravity_falls_codes_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/perihan_saygin_uf.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/5866786198.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/life_application_study_bible_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/levam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d1beb79-d730-4eba-a213-08bbfa7e66e5/leletexudovuvufi.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/tomawoledanesarukuko.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_off0000eab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB6 5356 bytes
SHA-256: 0d9a95ecf6379c038bd2d3bc0ee72601edb2e748fb0b9568902aa4460bd6c981
font_01_sfnt_off0000fcee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEE 10380 bytes
SHA-256: 449148b0c70760af4729d437ce421868eca6cc02eb21fe02d66dd6781fe2f35f

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