Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bbec64006304247…

MALICIOUS

PDF

75.2 KB Created: 2021-01-25 00:30:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 54bc2a88116b9d49408613c767d16bd3 SHA-1: 1aa641a42aa69c728145d3bdfd8a263c6cea690c SHA-256: 6bbec64006304247a5664bab42fdbe2e3b2cf89ab14b1cc387f4e5dc86128c15
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic and ClamAV detection. The document body, though heavily obfuscated, appears to contain text related to weight loss, likely serving as a lure. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it is designed for phishing or malware distribution.

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://traffking.ru/123?utm_term=how+to+lose+weight+in+a+week+yahoo+answers In PDF document text
    • http://parralax.net/fire_flying_dragon_simulator_mod_apkdali2.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/phoenix_weather_novemberao0nk.pdfIn PDF document text
    • http://edaruzal.xyz/zojukuzopedomimejicfu71.pdfIn PDF document text
    • http://goloszauniver.fun/39385982838bwcfz.pdfIn PDF document text
    • http://bigwin-1xbet.fun/care_home_operations_manager_job_descriptionlym59.pdfIn PDF document text
    • http://lienforkid.com/home_design_3d_app_for_android_free_download7813p.pdfIn PDF document text
    • http://remont-pc.website/sceptre_tv_codes5i4f6.pdfIn PDF document text
    • http://moneyindia.site/43118005858ikptc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418365/normal_5fe84ab59c6c2.pdfIn PDF document text
    • http://mainsale.info/sniper_jungle_commando_counter_attacks2grnp.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/potofaw/google_sheets_qr_code_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/angular_formgroupname_ngfor.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/imperative_and_exclamatory_sentences_worksheet_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/ashokan_farewell_sheet_music_lyrics.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_off0000e85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85D 5164 bytes
SHA-256: fdb4872d694fb1c936530e92cc0f4d8b254e028b245876147392a5731c80e1dd
font_01_sfnt_off0000f9fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9FE 10928 bytes
SHA-256: 53811634f167f03c786a24d2cccaba67eef55287afad2d66f40faa794375f483

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