Malicious PDF — malware analysis report

Static analysis result for SHA-256 10a382ef8bae4d1c…

MALICIOUS

PDF

84.7 KB Created: 2021-03-29 21:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b6bb86be2cd0fa9522a6dc89d8a62d39 SHA-1: b96c68b591b0dd36c490df8a2d6a2450a95b29ed SHA-256: 10a382ef8bae4d1c12f9cd515d6dc07ac8852e4d66f4a7892cf03ba29fb2d413
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable hosting, indicative of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. The document body, though heavily obfuscated, contains keywords related to downloads, reinforcing the malicious purpose.

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://midufefew.ru/award?keyword=mahalaxmi+calendar+2020+download+pdf PDF link annotation
    • http://pomuropujuj.22web.org/goalkeepers_report.pdfIn PDF document text
    • http://differencecheats.net/fiocco_allegro_sheet_musicr2tu8.pdfIn PDF document text
    • http://domodip.iblogger.org/93255089005.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/Pifhbdw/piwuxezozamujokilel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476152/normal_5ffdc89b555fc.pdfIn PDF document text
    • http://checkmyscore.info/vekezosudozekoji82aqk.pdfIn PDF document text
    • http://lifegirls.site/92062862308xg5xe.pdfIn PDF document text
    • http://podarokinsta.online/94745292696e9707.pdfIn PDF document text
    • http://momentikshop.space/the_easy_way_to_stop_drinking_allen_carr_freea0a29.pdfIn PDF document text
    • https://cdn.sqhk.co/fosuzonarefi/eidDgcx/grammar_and_spell_check_free_software.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370077/normal_5fdfbfa1491d0.pdfIn PDF document text
    • http://fruits-summer.fun/oxford_dictionary_full_apkjbgqe.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/3YhghgA/48755887347.pdfIn PDF document text
    • http://ubsvp.com/96308741326do9br.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407749/normal_603534d4bbbf0.pdfIn PDF document text
    • http://revershjtb.site/7343433809dvx9s.pdfIn PDF document text
    • https://cdn.sqhk.co/fexejikexew/oOibOkn/7128638930.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463824/normal_5fd12c3800a4d.pdfIn PDF document text
    • http://ecoterritory.store/joravofezuwusopfq194.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://wedukifolinewa.epizy.com/rixalokiwef.pdfIn PDF document text
    • http://topadut.epizy.com/consumer_reports_best_car_seats_for_toddlers.pdfIn PDF document text
    • https://1618b3f4-dcc0-4047-a816-eeb1cbe43c51.filesusr.com/ugd/a01749_87ad6e7db5f44a228772bd5eb90722d3.pdf?index=trueIn PDF document text
    • https://44034db3-6cdd-4729-adf3-7ccd6afcf354.filesusr.com/ugd/9fe9cc_9e231a68a2804d838f6f313a3726d0e5.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f75d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75D 5656 bytes
SHA-256: aa4397b8f7dc85657037d3cb5816243a11f69399fec7eb2442add41b1a0bc9a0
font_01_sfnt_off00010a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A93 11620 bytes
SHA-256: 93d739bc054c65d4e5ef144bf8ebf94784ee5033111250e3590e3356466f0538
font_02_sfnt_off000130f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130F8 5336 bytes
SHA-256: c4c26d28a2acd5f13e140666fd94c5b9f93156f47798998144747a71704dc95f