Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7ac42a931b6156…

MALICIOUS

PDF

71.0 KB Created: 2021-02-24 08:08:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e78e8d54291ff2de752fb113fd452e19 SHA-1: 7cf3d143cef671f17ed3a350f3137d5248e169aa SHA-256: 7c7ac42a931b6156f17689e7ae89c53c1c345d9315984f6d7c61eff86ae9b355
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=big+pixel+zombies+unblocked PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377100/normal_5fdec7a35c017.pdfIn PDF document text
    • http://ita-fitness.fun/alignment_protractor_for_turntablej1w3k.pdfIn PDF document text
    • http://leree6.club/how_do_i_become_a_public_administrator4re4s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450250/normal_6023cf3ca91af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445573/normal_6000ee589268f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470040/normal_5fe3ab7d23a1c.pdfIn PDF document text
    • https://cdn.sqhk.co/besawevij/K0jejif/pocket_rocket_meaning_in_america.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375206/normal_5fd7a98638f8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413462/normal_602614f5d3c97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449783/normal_5fd8df4bc25f5.pdfIn PDF document text
    • https://cdn.sqhk.co/safovokon/fK6WZSS/logisizofaxesigi.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/nolarifaforuxop/chunari_jaipur_ki_song.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/rock_song_choir_sheet_music.pdfIn PDF document text
    • http://velefaluzi.epizy.com/businessman_2_movie_2017.pdfIn PDF document text
    • http://muvalinifotu.rf.gd/arignar_anna_speech_in_tamil.pdfIn PDF document text
    • http://monufaro.epizy.com/office_2019_without_product_key.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_off0000d97e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97E 5456 bytes
SHA-256: 9149e3d17d15ac57de85a737bfb2ce20cb09a768f449c563774005bbb5e1fbf6
font_01_sfnt_off0000ec19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC19 10240 bytes
SHA-256: 1df9c2f3311982a3e4b67a61314712ae56ac53bfbba2fbf178416e118625caa0