Malicious PDF — malware analysis report

Static analysis result for SHA-256 c509c4879325a0bf…

MALICIOUS

PDF

64.1 KB Created: 2021-02-16 01:11:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 74d5470ff0090a052f7b443ea46acc4d SHA-1: 959e2358640975f0c3c298d4d4bb2de6daf5e7a9 SHA-256: c509c4879325a0bfe5cd57921fb79ff9aedda3ba4bf4b93a2c0b0c4bc144c6b2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=fun+things+to+do+in+la+reddit PDF link annotation
    • https://dixufewopirar.weebly.com/uploads/1/3/0/7/130775961/pusasidew.pdfIn PDF document text
    • https://cdn.sqhk.co/velabolo/ggWhbgc/word_crossy_answers_planet_earth.pdfIn PDF document text
    • https://litodamun.weebly.com/uploads/1/3/4/7/134710511/92a9a139.pdfIn PDF document text
    • https://cdn.sqhk.co/modojiti/gifhcif/dragon_ball_legends_ui_goku_art.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/9Igjghf/short_ride_in_a_fast_machine_band.pdfIn PDF document text
    • https://cdn.sqhk.co/vatepasoxi/bjcB6LD/monster_trucks_mudding_videos.pdfIn PDF document text
    • https://naxetiluwe.weebly.com/uploads/1/3/1/4/131483002/dudonebakeresupep.pdfIn PDF document text
    • https://cdn.sqhk.co/gowexenopa/Xhe1Uhb/disco_music_80_90_free_mp3_download.pdfIn PDF document text
    • https://cdn.sqhk.co/toromerepowa/igjibUq/20066551870.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gamadajizi.rf.gd/piano_music_sheets_easy_pop_songs.pdfIn PDF document text
    • http://fepadegan.epizy.com/nidarakiregusino.pdfIn PDF document text
    • http://mexaxezixolo.rf.gd/the_last_song_elton_john_lyrics.pdfIn PDF document text
    • http://jepisaf.epizy.com/indonesia_online_visa_form_islamabad.pdfIn PDF document text
    • http://wajufuful.rf.gd/24019607036.pdfIn PDF document text
    • http://sujawusoxenum.rf.gd/42456078990.pdfIn PDF document text
    • http://zojofat.epizy.com/remove_duplicates_in_salesforce_report.pdfIn PDF document text
    • http://talifox.rf.gd/xuzejivijag.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_off0000c08f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC08F 5040 bytes
SHA-256: ac0bb48640b435e06933431763b768f8d55bc056241c5a81cad3ab76f6e320e3
font_01_sfnt_off0000d1b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B0 9832 bytes
SHA-256: 2fb07a0a012f7aaab4c4a2bf77e636978c76a8ddf873071f831ac34c16f2d3fe