Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d2e8c021ce9da3…

MALICIOUS

PDF

68.8 KB Created: 2020-12-28 08:41:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8832cf5edf8d59232e4124a533e9ec31 SHA-1: 554eb930c0ea5cbc8b2693662841cb6a5a50cdc5 SHA-256: e3d2e8c021ce9da3d88315f5cac23bc52468abea9061e3095e8979a51238cafd
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm with numerous external PDF links, including one pointing to 'traffset.ru', which is likely a phishing or malware distribution domain. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://traffset.ru/strik?utm_term=ball+bounce+and+sport+dallas+tx PDF link annotation
    • https://cdn.sqhk.co/zotipimesaza/7maighg/northern_tale_4_level_8.pdfIn PDF document text
    • https://sakotitalivuvu.weebly.com/uploads/1/3/4/8/134887700/f59e8fd6d.pdfIn PDF document text
    • https://kogamawuxeg.weebly.com/uploads/1/3/4/5/134581879/tiwomefemow.pdfIn PDF document text
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/e5b159ca27cda3.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/gosete/bernette_65_sewing_machine_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/www_google_input_tools_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/22654266319.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/bharat_movie_wikipedia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/851c6a1e-ef0b-471e-a0b3-15e5675ea1b6/teaching_transparency_phase_diagrams_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/anomaly_warzone_earth_android.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/canon_mf3010_driver_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/tratados_internacionales_de_venezuela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67cfe443-ef28-49db-b90b-716bf2166c0e/84232581418.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_off0000d024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD024 5324 bytes
SHA-256: 785dfa653c3f299ef7afe93a30928ac335f01897dcee56e89dc8f112407234dc
font_01_sfnt_off0000e244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE244 10612 bytes
SHA-256: dc4304d3f231fdaa3f82bd40700f3526d01afee5e96a3f47efcd4dcdc25d503b

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