Malicious PDF — malware analysis report

Static analysis result for SHA-256 d30552d48f33b360…

MALICIOUS

PDF

71.6 KB Created: 2021-03-04 06:48:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 91207e6146fe5e6aa855e0e558dfbcd7 SHA-1: 0c9b47c4601296a71c054454d3c979c34cabfd8b SHA-256: d30552d48f33b360f16cbfa2d2a926de1df88b8680ce838bc522f9b7e86a7b7a
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with several pointing to disposable hosting and identified as part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or delivering a secondary payload. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

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://bologen.ru/award?keyword=capital+market+line+excel+template PDF link annotation
    • http://potenciy.xyz/crosman_760_pumpmaster_parts_diagramw42id.pdfIn PDF document text
    • http://lefenup.22web.org/wunitivimusegur.pdfIn PDF document text
    • http://shoplus.info/muduwakikarazufixuxedzttf7.pdfIn PDF document text
    • http://leftoutclub.com/marcy_platinum_home_gym_mp3500qfkt9.pdfIn PDF document text
    • https://fibetenozogu.weebly.com/uploads/1/3/0/8/130813768/tubofidiraboju_bogetapuleroj_rugog_zevulezidipow.pdfIn PDF document text
    • http://monongzhlh.space/distributing_and_combining_like_terms_worksheets6otno.pdfIn PDF document text
    • http://xelasurugopu.mywebcommunity.org/dell_sound_drivers_free_download_for_windows_7.pdfIn PDF document text
    • http://mixit.info/things_fall_apart_chapter_14-16_summarygs2ks.pdfIn PDF document text
    • http://xonifivi.iblogger.org/loosening_of_associations_blocking_flight_of_ideas_tangentiality_circumstantiality.pdfIn PDF document text
    • http://maykistore.ru/what_is_the_story_of_tokyo_ghoul_season_3f7os0.pdfIn PDF document text
    • https://sopetenoredu.weebly.com/uploads/1/3/5/3/135318191/vesigawamanatar-zodiliwo-redanaxebimi-dutujapa.pdfIn PDF document text
    • http://pemufosapakem.mypressonline.com/sumipizowukalomi.pdfIn PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/2119997.pdfIn PDF document text
    • http://itmax.info/amazing_hero_gamed662l.pdfIn PDF document text
    • http://rankingcoach-seo.com/inguinal_hernia_rch_guidelinestf79j.pdfIn PDF document text
    • http://polikarmonolit.ru/miziwumunugikeliq8wjg.pdfIn PDF document text
    • http://myfavoritesun.xyz/88401987383ezrk9.pdfIn PDF document text
    • http://genoray.pro/123576043330sw61.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roxinus.rf.gd/stepped_foundation.pdfIn PDF document text
    • http://xowilewegiwo.myartsonline.com/what_foods_were_eaten_in_ancient_greece.pdfIn PDF document text
    • http://legokejapo.atwebpages.com/how_to_reset_black_and_decker_bread_maker.pdfIn PDF document text
    • http://lamafuravufezin.epizy.com/71903080947.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_off0000dce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE6 4936 bytes
SHA-256: 2ef6274c83a8f5c2e17e4549dddc91f9f55952a3cc1e25e0e90d9c8be6a86ff2
font_01_sfnt_off0000ed9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9B 10308 bytes
SHA-256: 2e6b1c4c8cfd8a7b77cbe3e9824f2fed4474c21f59375e2e3c444cdbad0854de

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