Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5e2b5867e2c088e…

MALICIOUS

PDF

78.9 KB Created: 2020-12-30 16:56:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6c983e9f4f3134f53b8382bce1890bb9 SHA-1: b01cfa5f66bcafd83d06cea77c74287c82777953 SHA-256: c5e2b5867e2c088eb14d08a9ca0e314829f4ed5ab483f4276f3cbf876b2e8bab
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/strik?utm_term=mbuzzy+home+login PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408197/normal_5fb9789dcdf2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5fc1fecbd10b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486042/normal_5fc15abc25e11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382962/normal_5f8e8ad4ae058.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445868/normal_5fac466392a98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479439/normal_5fb96f16e7fb1.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/rujabepifar/autocad_2017_crack_torrent_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/metric_conversion_worksheet_answers_9th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/sapilo.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/driver_brother_dcp_t310_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/rental_agreement_template_word_ontario.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/universal_li_ion_battery_charger_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/28438160290.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/undertale_logo_text_generator.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DD 4912 bytes
SHA-256: f1fc78c2bb8d3e14e70e5b9217d3524ed3eb70779459301bc1b98d7779851580
font_01_sfnt_off0000f392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF392 11140 bytes
SHA-256: 60f8c3f78386b692a688d396c8cdf44a25d76f050568c7faa7a638ef7a1db359
font_02_sfnt_off000119de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119DE 16060 bytes
SHA-256: 503f5200e83b189a546b6c6e1d808633a9135186956fe76ff9bd78de3d91e3c6

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