Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c3e7cadffc94f5…

MALICIOUS

PDF

80.2 KB Created: 2021-03-14 19:06:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1b7a959535d6457e92494fca097dee95 SHA-1: 490031ab7894e4c02092946f965605670cbb7472 SHA-256: 59c3e7cadffc94f5a9d92ba91540f4af045a572a52ef59d65c5d3d8084c810c7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs that point to disposable domains, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to contain metadata related to search guides, suggesting a lure to disguise the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=relativity+searching+guide+9.5 PDF link annotation
    • http://zonizubiro.getenjoyment.net/tuesday_with_morrie_movie_online_free.pdfIn PDF document text
    • http://lotsmen.com/29622728625ztd6p.pdfIn PDF document text
    • http://olx-delivery.cc/ganarigukobetadujunisqusn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377679/normal_604cc148f40c2.pdfIn PDF document text
    • http://kieverts.xyz/holiday_green_day_sheet_musiclhi8l.pdfIn PDF document text
    • http://chempion.coffee/andy_burrows_reasons_to_stay_alive_reviewktu30.pdfIn PDF document text
    • http://megantv.site/possessive_nouns_worksheets_with_answers_grade_6sthy6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367287/normal_5fe5360d62c86.pdfIn PDF document text
    • http://vatidenow.medianewsonline.com/lg_v20_case.pdfIn PDF document text
    • http://mazanatur.space/tunezixixowixolurogamxa1q.pdfIn PDF document text
    • http://pubgucbayim.com/tamao_de_una_ficha_bibliografica_en_wordrmbsp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464524/normal_5fcc90bc8acda.pdfIn PDF document text
    • http://businessoutsourcing.info/83558810399b1g8b.pdfIn PDF document text
    • http://mibejar.sportsontheweb.net/farelabiludedot.pdfIn PDF document text
    • http://nemagufi.mywebcommunity.org/lejamatanigepovuka.pdfIn PDF document text
    • http://mnclassis.org/how_to_use_a_rainbow_vacuum_cleaner7yvmp.pdfIn PDF document text
    • http://negozio50sconto.info/pojagubemsqs.pdfIn PDF document text
    • http://kazexajisodibu.medianewsonline.com/why_does_my_dyson_keep_flashing_filter.pdfIn PDF document text
    • http://nigoguno.scienceontheweb.net/zumugopajenezinofizib.pdfIn PDF document text
    • http://tuvivukaroj.mygamesonline.org/kabagubapole.pdfIn PDF document text
    • http://gordei2d.com/95466962415e2xcn.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
    • http://todidetiped.onlinewebshop.net/the_very_busy_spider_activities_eyfs.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_off0000ed0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0F 5452 bytes
SHA-256: 4e50a5965753d02c7c3281d62d6021e9c4f5534eb35a0837c9d1ff80ac7075c0
font_01_sfnt_off0000ff9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9D 11268 bytes
SHA-256: 54dff550712d913aaee00c7ac747253fc29d18f9e256f20604741d7b723bb056
font_02_sfnt_off0001256e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1256E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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