Malicious PDF — malware analysis report

Static analysis result for SHA-256 839e2cdca0c41b43…

MALICIOUS

PDF

67.7 KB Created: 2021-02-12 20:01:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 687770ffa8962e3c5bf6be47d5fd8a09 SHA-1: 342e457ffc31ffcdb8cc59f0b540570782aedb0b SHA-256: 839e2cdca0c41b439c7958bfe6738307c1b62e7e8ba397b0c26c515ca1b58f02
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=elements+of+drama+powerpoint PDF link annotation
    • https://cdn.sqhk.co/zujomawa/ZwfjfcZ/67913249692.pdfIn PDF document text
    • http://lobuzef.iblogger.org/12461317142.pdfIn PDF document text
    • http://pavawafupef.66ghz.com/mevinunenonugevo.pdfIn PDF document text
    • https://cdn.sqhk.co/bupitagalir/eJvVA7J/simoruwewepizabuzixenora.pdfIn PDF document text
    • https://donedujawag.weebly.com/uploads/1/3/4/3/134315137/juduzim-wanegugujeket-nugikanozobe.pdfIn PDF document text
    • https://jekodijup.weebly.com/uploads/1/3/4/4/134490718/8fcfc2912acdc15.pdfIn PDF document text
    • https://xaxexuwolak.weebly.com/uploads/1/3/5/9/135978614/nomosaratikuruxazu.pdfIn PDF document text
    • http://pobijubak.iblogger.org/yokel_crossword_answer.pdfIn PDF document text
    • https://cdn.sqhk.co/sazalevimit/djhMii7/namojepixumojipomelizozel.pdfIn PDF document text
    • http://hookup158.fun/xodabuzodidirmt5i6.pdfIn PDF document text
    • http://kawlites.online/gerewulebunaxukr0nf.pdfIn PDF document text
    • https://cdn.sqhk.co/kerametunal/igdhcyu/reborn_baby_dolls_boy.pdfIn PDF document text
    • http://avbox.org/28199753311y57pw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://donirodep.epizy.com/51758672447.pdfIn PDF document text
    • http://podapuleleg.epizy.com/accidents_reported_today_york_pa.pdfIn PDF document text
    • http://fekerudosepu.rf.gd/27658272124.pdfIn PDF document text
    • http://bisiziwaros.epizy.com/chamma_chamma_video_song_in_1080p.pdfIn PDF document text
    • http://rosuwofa.rf.gd/60083516927.pdfIn PDF document text
    • http://lelekon.epizy.com/mafatusimageta.pdfIn PDF document text
    • http://sidakofonol.epizy.com/canadian_passport_application_child_form.pdfIn PDF document text
    • http://ramenejepom.rf.gd/signs_and_symptoms_of_diabetic_retinopathy.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_off0000cd6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD6E 5236 bytes
SHA-256: 944e551b64315c2d0b4073dfba5d08f73656166ad572fda2a39a47966448d906
font_01_sfnt_off0000df37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF37 10136 bytes
SHA-256: 619c2be9c1e269569841cda96dedc74fb346edd16c6eb3add3f22835e388dc89