Malicious PDF — malware analysis report

Static analysis result for SHA-256 4883aff35dc51f10…

MALICIOUS

PDF

78.7 KB Created: 2021-04-17 23:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2f31063bc06ccb060b0b2318ccc1c9d4 SHA-1: f4f0cb0ab09390f5685b9410b6be7c8ebb6c21f9 SHA-256: 4883aff35dc51f10f14010f6733ebaa7cec57261905d2b97fe0a3e699bb6fcfc
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dafemum.ru/strik?utm_term=my+first+grammar+2+student+book+pdf PDF link annotation
    • http://lotobajigufar.mywebcommunity.org/59509276939.pdfIn PDF document text
    • http://sesizuxewewax.mygamesonline.org/tp-link_tl-sg1005d_v8_5-port_gigabit.pdfIn PDF document text
    • http://bagesopabiwub.scienceontheweb.net/bikinebisukapi.pdfIn PDF document text
    • http://agentsoft.space/67665897244rrrcg.pdfIn PDF document text
    • http://neyroskakalka.site/replacement_battery_for_2003_honda_rancher_3506svd1.pdfIn PDF document text
    • http://paxijivatebul.getenjoyment.net/79037752728.pdfIn PDF document text
    • http://vijofudevadotar.mywebcommunity.org/adverse_childhood_experiences_study.pdfIn PDF document text
    • http://zunuruxeguxifi.mygamesonline.org/future_english_for_results_3_free_download.pdfIn PDF document text
    • http://studytogether.fun/chesapeake_shores_episode_guide_wiki1y4my.pdfIn PDF document text
    • http://zisezamerares.mygamesonline.org/81787075890.pdfIn PDF document text
    • http://ravasixojodari.mygamesonline.org/giduxaja.pdfIn PDF document text
    • http://dejepuzalew.mygamesonline.org/nokejukovope.pdfIn PDF document text
    • http://dejivuxa.mygamesonline.org/42996474688.pdfIn PDF document text
    • http://kixurox.getenjoyment.net/53945361574.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/muvazi/love_screen_wallpaper_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/xofalepelala/essential_oils_uses_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fb432dc-090a-404d-9600-306e8c111503/the_boy_in_the_striped_pyjamas_book_review_characters.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/international_business_geringer_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2e3fefd-e18d-4c06-94ad-fe304f271386/zulapod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b13cebfc-2c5a-4926-81ad-4994b0bc6339/piwifova.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31530734-0652-493c-992d-299be4df9ee1/lanuvadasekatifowiteva.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/fifesosemalamur.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/11358503567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8e91a4f-e0c7-4bd5-965d-3b8316b0e6c8/what_is_the_best_vegetables_for_diabetics_to_eat.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_off0000f32e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32E 5772 bytes
SHA-256: a26365d7f3e37d20f38de76b36c7f0bd0329002b4d42ad6bbfb4f032cd160d02
font_01_sfnt_off000106db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106DB 10892 bytes
SHA-256: 99034c236d5965eb75abe800d6db32123e56d2949bae82bf833fadca1746b868

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