Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a63ef22ec00743…

MALICIOUS

PDF

76.7 KB Created: 2021-05-15 14:04:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 3ec814be727653a96c4c4a65522eefe4 SHA-1: 4af4ab351184cd2fa4c87beb944b4b1ff1c086a0 SHA-256: 09a63ef22ec007437147108846785a847ec8a240e8839563451361c2e708ac10
126 Risk Score

Malware Insights

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

The file was detected by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs pointing to disposable hosting, indicating a link farm or redirection scheme. The presence of embedded URLs suggests an attempt to direct the user to malicious content, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/strik?utm_term=club+car+precedent+seat+covers+madjax PDF link annotation
    • https://cdn.sqhk.co/nerutadege/fifhija/accident_investigation_templates_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vawerowosuw/m6ijBij/100_cotton_flannel_bed_sheets.pdfIn PDF document text
    • https://cdn.sqhk.co/kavonalitego/YVgf8hi/vefododoso.pdfIn PDF document text
    • https://cdn.sqhk.co/feduminaro/gdgehfJ/65763175384.pdfIn PDF document text
    • https://cdn.sqhk.co/tatiderubota/8cEjfhb/bipalafelunowopo.pdfIn PDF document text
    • http://bilabugova.iblogger.org/gramsci_hegemony.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410415/normal_5fd0875829625.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426545/normal_602421c5919b8.pdfIn PDF document text
    • http://zakababonedip.iblogger.org/boyz_n_da_hood_song.pdfIn PDF document text
    • https://cdn.sqhk.co/nawakema/ijzhdCp/76248525547.pdfIn PDF document text
    • https://cdn.sqhk.co/figesuweno/ljXihVh/74440567299.pdfIn PDF document text
    • http://xokesate.22web.org/combined_footing_design_excel_sheet.pdfIn PDF document text
    • http://dapabikokewe.iblogger.org/descriptive_words_to_describe_bad_weather.pdfIn PDF document text
    • http://nusoxex.iblogger.org/68612352236.pdfIn PDF document text
    • http://jijawaxasaxipaj.22web.org/judinag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/luxelula/cheppave_chirugali_movie_bgms.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/meniziropinutegatetavan.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/amman_padal_audio_songs.pdfIn PDF document text
    • http://wiwowefitupek.epizy.com/besazalaxipugazulopero.pdfIn PDF document text
    • http://zotinulimoruv.rf.gd/zabufufiranaf.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/power_smart_db7651.pdfIn PDF document text
    • http://depupumuda.rf.gd/behavioural_science_book.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E7 5420 bytes
SHA-256: dc2346c822dc0ee41c122716c0aea011ce5c471ec679f6b9dfd5dd38502e71e2
font_01_sfnt_off0000f545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF545 9980 bytes
SHA-256: 83591ee7d815a10592a91bbcafd05ee8d4ecb38ef6c5fff429c4c841930736ff
font_02_sfnt_off00011776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11776 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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