Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f13fd3722d76250…

MALICIOUS

PDF

97.2 KB Created: 2021-02-11 07:09:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b68819cebda545afb002a5061384d89d SHA-1: 848d5f0f78357fb9d7eb150dcfdba5bda9489f0a SHA-256: 1f13fd3722d7625097d905f27557cdd774253103d92984852e467551b0a08b0b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=compiled%20financial%20statements%20report In PDF document text
    • https://cdn.sqhk.co/zenetofuma/hiageyX/sony_crackle_movies_and_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/bimepefav/javhjjj/betebem.pdfIn PDF document text
    • https://cdn.sqhk.co/nugofonavuf/ce51rY4/xadon.pdfIn PDF document text
    • http://mabay.fun/ielts_reading_answers_of_hydrogen_carsi4x8f.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/PXXhdjZ/picture_collage_frame_with_clips.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/jehfuij/monivuxalusugukelamifuf.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/giijhha/nail_salon_near_me_cheap.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/G1gijiG/unplayable_ball_in_water_hazard.pdfIn PDF document text
    • http://naturapple.space/esl_reported_speech_advanced_exercisesa65j8.pdfIn PDF document text
    • https://cdn.sqhk.co/muluxodipoto/vjfQgc0/real_steel_world_robot_boxing_mod_apk_ios.pdfIn PDF document text
    • http://redita.fun/ebira_newspaper_report2w9n2.pdfIn PDF document text
    • http://artelamp.store/498896320953w2hh.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/fosawef/score_match_hacked.pdfIn PDF document text
    • http://nijibibikij.rf.gd/2017_all_bollywood_movie_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/96901387579.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/apache_openoffice_4._0._1_mac.pdfIn PDF document text
    • http://tuxusajef.rf.gd/61859216672.pdfIn PDF document text
    • http://tereralubo.epizy.com/62561915503.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_off0001308d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1308D 5208 bytes
SHA-256: fdf27314f7df0d7adaaf442591747e21d2f4205dfbf6e17a88c9ce23adadbf23
font_01_sfnt_off00014227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14227 24248 bytes
SHA-256: 837077536cbd27ab2091b4615034bfba92364c46d38d8eded6823fb8cf1c85e5