Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b3c547f732b107f…

MALICIOUS

PDF

67.9 KB Created: 2021-02-16 21:24:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 38472559886589ad09765139e8c77940 SHA-1: d8ef8ffdd7b54df2fb844cd1555a823e3904f209 SHA-256: 1b3c547f732b107f15a0ea6d7a3f2d77546542afc7f8b2cdb9fb89564106f3e3
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://crophysi.ru/wix?keyword=druck+season+1+ep+2 In PDF document text
    • https://cdn.sqhk.co/vovewotutal/ibjigiw/733680255.pdfIn PDF document text
    • http://okstore.info/cancer_del_colon5mpvw.pdfIn PDF document text
    • http://masonufidowex.iblogger.org/82425734399.pdfIn PDF document text
    • http://comp-arenda.site/55842381311kf4gu.pdfIn PDF document text
    • https://cdn.sqhk.co/mofipife/diihb8J/cosmic_elegy_meaning_in_telugu.pdfIn PDF document text
    • http://lupokixez.22web.org/ragosaxiruram.pdfIn PDF document text
    • https://cdn.sqhk.co/dawadetugas/vjiQpif/70483219185.pdfIn PDF document text
    • http://vufilulojusabid.iblogger.org/detailed_wedding_budget_template_excel.pdfIn PDF document text
    • http://swiss-gear.store/piramides_de_malpighi8tx5p.pdfIn PDF document text
    • http://gmetry.online/guild_wars_2_fractals_guideyil4n.pdfIn PDF document text
    • http://moneyindia.site/2418827877444zil.pdfIn PDF document text
    • http://uaportal.site/aflatoxin_m1_in_milkatpzd.pdfIn PDF document text
    • http://idealslimitalia-official.site/die_bergdoktor_episodenguidewlgbd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://terujak.epizy.com/how_to_turn_off_music_on_ipod_nano_6th_generation.pdfIn PDF document text
    • http://jojofolarimema.epizy.com/piriformis_muscle_origin_and_insertion.pdfIn PDF document text
    • http://duvasupe.epizy.com/fadujovifuvulefavoves.pdfIn PDF document text
    • http://raziwisubuza.rf.gd/neropijafukubon.pdfIn PDF document text
    • http://jabaxuzadowepep.rf.gd/finowuwus.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_off0000cd41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD41 5144 bytes
SHA-256: ec31c4bbd337a8e371b18204844199f4fdbffd574e83970bb1d0a8b2a44d28f5
font_01_sfnt_off0000dee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE3 10540 bytes
SHA-256: d08a298498b5887d141d7f24daa16eb4075584a6892b57792d1dd359e9ef2212