Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b2493d214f53b7c…

MALICIOUS

PDF

67.4 KB Created: 2020-11-22 05:20:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9540a3fad4b96d183328190f43eefd88 SHA-1: bf18a1d066eed66f31b2d566def79a4e18c0c522 SHA-256: 9b2493d214f53b7c1345760fcc768ef65e10b97a230731458a0159246085b28c
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a lure related to a 'Panasonic fax phone answering machine manual'. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/123?utm_term=panasonic+fax+phone+answering+machine+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4425217/normal_5f9b52f2c9103.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5fb8dbd09b988.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/bejeseja/gothic_calligraphy_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/auto_color_library_color_chip.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/jet_16_bandsaw_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/rewadizemego.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/scientific_lab_report_citation_format.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/damoweliz.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/pearson_realize_answers_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/advantages_and_disadvantages_of_biotechnology_in_agriculture.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/54703143388.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/balloon_tower_defense_6_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/logowe.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/xovemira.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/the_canterbury_tales_worksheet_answers.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 1

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c91e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC91E 5592 bytes
SHA-256: a7ce40a9311468b9b6128c1a84882487acd6ac0146e4d99ff9904a42b6516962
font_01_sfnt_off0000dc15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC15 10148 bytes
SHA-256: 3b13046923de5e4ac13a959a072419f11aa0268a9fda1bd3e3bce4c81579dbe5

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