Malicious PDF — malware analysis report

Static analysis result for SHA-256 7942120cbb378e6a…

MALICIOUS

PDF

96.5 KB Created: 2021-03-23 13:09:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 3af4a9d7bcc675979e92bce613debe52 SHA-1: 5ec30c793c459129f79f1e38d7023ccd17c32e75 SHA-256: 7942120cbb378e6a42b971ef4b88eb9a2500ef743aa6842124929609f3097003
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary external URI pointing to 'https://lozipotod.ru/aws?utm_term=what+is+african+ethics'. This URL, combined with the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM', indicates a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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://lozipotod.ru/aws?utm_term=what+is+african+ethics PDF link annotation
    • https://cdn.sqhk.co/nemazuwigumo/c938hji/vavatexasaxagugopa.pdfIn PDF document text
    • http://ketrovk.xyz/63890362111sd4f6.pdfIn PDF document text
    • https://cdn.sqhk.co/mutobudenit/Alhgjhj/26193899074.pdfIn PDF document text
    • http://befigter.xyz/dead_target_zombie_offline_mod_apk0k4ae.pdfIn PDF document text
    • http://buvalopexur.mygamesonline.org/deforestation_short_essay.pdfIn PDF document text
    • http://oyuncuxx.com/95164087216ooe0g.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/does_beats_have_lifetime_warranty.pdfIn PDF document text
    • http://pebifakonek.sportsontheweb.net/bcsc_ophthalmology_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dutigimomana/hdmSagd/my_talking_tom_mod_apk_download_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/hhiUrIZ/zepuv.pdfIn PDF document text
    • http://ig-copyrighthelpcenter.com/358232805536i7ir.pdfIn PDF document text
    • https://cdn.sqhk.co/vofaruvukuk/1RLihhg/22382948989.pdfIn PDF document text
    • http://moreprodukti.com/127146796597h5wb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/99c52edd-fd20-4567-adc0-483c9d809743/12007766210.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/analytical_reasoning_mcqs_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/wu_tang_american_saga_cast_names.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7302122-cf54-4cf1-8fae-a446272661fb/56028325598.pdfIn PDF document text
    • https://1dfef493-bba3-4db0-89f7-7cef958ceea2.filesusr.com/ugd/3dbeb3_41473ea174c245c6b1b44a1a04d28f6d.pdf?index=trueIn PDF document text
    • https://33b7cf8b-1cb2-46d9-9063-17e97cba5e80.filesusr.com/ugd/9edd50_4c56d6bf298b415ab004383ed313d49d.pdf?index=trueIn PDF document text
    • https://9cf5cc10-3c2e-4e30-ae6b-73ed7beed88a.filesusr.com/ugd/5c2b46_eeb93cb204a34f2c99bb132bb5e571b0.pdf?index=trueIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/42690110710.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/swot_analysis_model.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11c9bc2d-78dc-474a-ab4f-8b1083ab51e1/how_to_factory_reset_helix_lt.pdfIn PDF document text
    • https://75cc4b12-69da-4024-8422-75f9303faa99.filesusr.com/ugd/d6c222_0f68549af88b41a2b18bb2733797cfa5.pdf?index=trueIn 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_off00013f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F49 4952 bytes
SHA-256: abb3ab6b3485e347be91bc452571b8c9ee37509ce5de0105f814f7086b3fcbc8
font_01_sfnt_off00015029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15029 10672 bytes
SHA-256: 7eb37edf32ade96266e6faab0d12a4808012b7aad706e7b3736db8a06ad103b2

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