Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ebf8212721b38a…

MALICIOUS

PDF

75.6 KB Created: 2021-04-02 22:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d014c6716d6eecb2729d239c5cb5bf09 SHA-1: 719afb19f5e9249916304363f5da5b460b5e1540 SHA-256: 03ebf8212721b38aaaf80767a5831f7804e7df8b3cf52a90aa4f0c612244c503
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://botokaw.ru/strik?utm_term=doterra+cooking+with+essential+oils+ebook PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451744/normal_603c316d0ee7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409000/normal_60458e862ca3f.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/Yiebij0/funny_disney_quotes_about_friendship.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxifopu/mZuVjaS/fagipubuzuvewatuvawabe.pdfIn PDF document text
    • http://wulurag.mygamesonline.org/41952011298.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476273/normal_6025f263a7271.pdfIn PDF document text
    • https://cdn.sqhk.co/dikabopagesi/gcTggjj/a_couple_of_forevers_fakaza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416811/normal_601118fedeaac.pdfIn PDF document text
    • http://liketime.online/how_to_learn_computerized_accounting57w05.pdfIn PDF document text
    • http://want-seo.ru/wink_live_apk_mod_coinu1l5f.pdfIn PDF document text
    • http://sdek-24.cc/fudutoziwunagmjf2w.pdfIn PDF document text
    • http://card2card-perevod24.site/singing_lessons_app_offlinesh6pm.pdfIn PDF document text
    • http://pasendapp.online/latitude_e6410_keyboard_lightdykre.pdfIn PDF document text
    • https://cdn.sqhk.co/zezerixuwab/Hjaopie/46563753842.pdfIn PDF document text
    • http://junumidutuzakox.getenjoyment.net/40709432034.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375891/normal_605d80bf630ff.pdfIn PDF document text
    • https://cdn.sqhk.co/loxexafetivu/hjjjdhd/62832294487.pdfIn PDF document text
    • http://nakijeku.mygamesonline.org/the_salesman_death.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384470/normal_5ffe0c8e40cc9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nosofaxiwobud.epizy.com/80864439266.pdfIn PDF document text
    • http://nojubeweba.epizy.com/biomedical_instrumentation_lab_manual.pdfIn PDF document text
    • http://lexalare.epizy.com/fovubekefaxefewidizi.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_off0000e97a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97A 5356 bytes
SHA-256: ccebbed610b65d151f964f15fae89d7dc8670c6c0f9717660b581d9355541ad6
font_01_sfnt_off0000fbc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC2 10780 bytes
SHA-256: d7e712fd8e3ea530a26f7f045364ab9b7a4f7ecb72bccfab79dafe312175af6b

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