Malicious PDF — malware analysis report

Static analysis result for SHA-256 38e97339abade6ac…

MALICIOUS

PDF

76.5 KB Created: 2021-03-22 01:45:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: de1c15c327705ca56403996e3a280324 SHA-1: 40708fded82a58c7f84c7fbda17b07eb79a285b1 SHA-256: 38e97339abade6acdde21756dc0ee52a5a15f5d331c6e2c6a26848c993b3d09b
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 0.9991

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://soxebez.ru/wix?keyword=jamis+road+bike+weight PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4425217/normal_5fcecff40f32e.pdfIn PDF document text
    • http://ins.expert/limavatafivefufomrt76r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376374/normal_6025710b93885.pdfIn PDF document text
    • http://uspex22.online/73365090125gaf2p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425926/normal_602991b413a75.pdfIn PDF document text
    • http://iuts.space/jewupukagotuto1w6.pdfIn PDF document text
    • http://xawaviki.iblogger.org/wine_regions_of_france.pdfIn PDF document text
    • http://emirofficialzm.com/practical_machine_learning_in_r_by_fred_nwangangao7wxa.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/54919457628.pdfIn PDF document text
    • http://tersq.fun/download_crack_alien_shooter_2_conscription4r62o.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/8345d694-073e-410d-b025-45772fb11953/ryobi_leaf_blower_carburetor_rebuild.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a966be05-9ec4-4721-b031-f32d2f3452d6/bilibim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62da950d-faf0-4a61-baaa-7fc431c9bd6f/tufagixevozina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ce7f072-f13b-4204-a35c-65dc12faab95/pathfinder_2e_character_sheet.pdfIn PDF document text
    • http://xavisijividefo.epizy.com/weather_report_mumbai_today_satellite_picture.pdfIn PDF document text
    • http://depubewe.epizy.com/gesekazulogixuzazeferob.pdfIn PDF document text
    • http://sokevigaku.rf.gd/crystal_report_9._22.pdfIn PDF document text
    • http://lijaros.rf.gd/what_does_l_mean_on_ear_thermometer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bfac624-141c-4588-ade0-ff6a46e66d97/bissell_healthy_home_vacuum_brush_not_spinning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f9b8a26-60f1-4347-b4ad-0c9ad06bb8f5/35720359722.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba3b953d-19b1-4a98-b22c-70e5a22ffc99/how_to_read_ebook_on_ipad.pdfIn PDF document text
    • http://zukowuneze.rf.gd/vonefitivotore.pdfIn PDF document text
    • http://perabojon.rf.gd/welding_symbols_test_section_1_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d162c041-5e83-4f52-83a0-d38a6589dcd5/how_to_turn_4k_on_element_tv.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_off0000ecaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAA 5492 bytes
SHA-256: 5eb109570df7c41b3b305dac36a1f284c8fc5ff6f2f3c4b4b6ad455b02c2266d
font_01_sfnt_off0000ff3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF3E 11068 bytes
SHA-256: 8a2e0686170583b78d89d4b79649da56fccc5d301f1991945768adf207b5123e

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