Malicious PDF — malware analysis report

Static analysis result for SHA-256 efe5dd22bfe538e2…

MALICIOUS

PDF

96.3 KB Created: 2021-03-21 22:43:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5b7c9cf399ac65d5b92bac4dbe3bdee9 SHA-1: b0e6cd4033c6dcdfe83506996cb0b994ec4f25c2 SHA-256: efe5dd22bfe538e22ab1db81ff8f10f6a02483c34e8a3bbe339f8157aca5b191
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 0.9997

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://lozipotod.ru/strik?utm_term=south+carolina+online+practice+permit+test PDF link annotation
    • http://nesebonuvobeju.getenjoyment.net/bending_machine.pdfIn PDF document text
    • https://gadetuzajuvi.weebly.com/uploads/1/3/4/8/134850054/baxanurono_walefo_fajowunudini_nixezozumudake.pdfIn PDF document text
    • http://baugroup.info/97187588692omb2j.pdfIn PDF document text
    • http://pixxel.life/meximeli4tp9a.pdfIn PDF document text
    • http://lamejix.scienceontheweb.net/2000_ford_ranger_stepside_bed_dimensions.pdfIn PDF document text
    • https://cdn.sqhk.co/jawafurovif/ihJjRje/android_vs_iphone_market_share_united_states.pdfIn PDF document text
    • https://cdn.sqhk.co/tisezalave/1igighe/vintage_craft_master_paint-_by-_number.pdfIn PDF document text
    • http://dotekebenutedex.scienceontheweb.net/32410944774.pdfIn PDF document text
    • http://doporujela.iblogger.org/iec_standards_free.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/PggcYLK/forgotton_anne_nintendo_switch_review.pdfIn PDF document text
    • http://talakam.space/557859372107qh9b.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/mulized5dx1.pdfIn PDF document text
    • https://sapefesoj.weebly.com/uploads/1/3/1/4/131453354/a918f4752c3cde.pdfIn PDF document text
    • https://simebusuf.weebly.com/uploads/1/3/1/4/131406507/7585495.pdfIn PDF document text
    • http://mirror-x.org/effects_of_stress_on_academic_performance70t4q.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/b9ea5993-03c8-482c-a245-92dc783b0ccc/vintage_photography_books_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07c8e276-cfda-480a-8d82-822c3257bbb4/why_wont_my_samsung_smart_tv_stay_connected_to_the_internet.pdfIn PDF document text
    • http://dusameferadulo.onlinewebshop.net/email_marketing_download.pdfIn PDF document text
    • http://xutenujute.myartsonline.com/38280577133.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9141bad1-8e8a-48d2-b297-d82c57345b1d/38926014299.pdfIn PDF document text
    • http://jewojaregoluwat.epizy.com/19542606870.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_off00013b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B02 5276 bytes
SHA-256: 053d9fef378c63eaf6323cc1c53ebb2a707e96ae7bc1313df56f9feeae2678e9
font_01_sfnt_off00014ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CCB 11468 bytes
SHA-256: 0fcfd6fb0c272a88b65971455770072f0ce473b8cf9a34d2487f0c424ef0fa50

Open this report in the interactive analyzer, or submit your own file for analysis.