Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e028eb6f04a4b4…

MALICIOUS

PDF

83.1 KB Created: 2021-03-28 22:26:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: cda1a048ab8fdb8bc77f50e5baf05107 SHA-1: ceab4e108bd6cfa882ec1bd92d61b2a293c6596f SHA-256: 69e028eb6f04a4b45f99f54d111572f7e33ded537b3a0ce4d802daba8ebfdf28
116 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. The heuristic 'SE_CALLBACK_LURE' indicates the document's content is designed to trick users into calling a phone number, a common tactic in tech-support scams and callback phishing. While no scripts were explicitly extracted, the presence of embedded URLs suggests a potential for further malicious activity, such as downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://lozipotod.ru/strik?utm_term=kobalt+10+inch+tile+saw+reviews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457862/normal_5fd373d3e94fd.pdfIn PDF document text
    • http://nufogikije.22web.org/spanish_learning_book_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_6015ee511d731.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497688/normal_6031d72c05f0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470967/normal_6013855359d2f.pdfIn PDF document text
    • http://furunow.iblogger.org/wupaguzuxivez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379030/normal_6011441f89647.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/zerepuzuze/zodebozolaveriziwutefalax.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/bhoot_fm_10_august_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/abcesso_dentrio.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/23018589753.pdfIn PDF document text
    • http://zabepir.rf.gd/nunasunewexena.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/bengali_food_images_free.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/92609653606.pdfIn PDF document text
    • http://jotoxen.epizy.com/iphone_vs_android_privacy_2019.pdfIn PDF document text
    • http://fofuxolisemaxim.epizy.com/19632506446.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/womuwewuwininozuzekuje.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/31148712155.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/bifuketi.pdfIn PDF document text
    • https://s3.amazonaws.com/wolawatin/gidodoburonusezaxidixuxu.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/following_directions_worksheet_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/sony_str-dh740_subwoofer_setup.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_off0001056c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1056C 5340 bytes
SHA-256: 12c181031f1bc96bd08ecd18f77d8f7ee022846396087a37f9cfb4f485da04fe
font_01_sfnt_off000117b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117B3 11616 bytes
SHA-256: 70327963cb343d1013b96ad2994d55b11bfe37e2ee23cdd6d5fcc368db588122

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