Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a7df8224e664058…

MALICIOUS

PDF

85.8 KB Created: 2021-04-05 07:44:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96de901afc58619a5b25e10c6ddb1d96 SHA-1: afd1812b0dd66aefa2f5c798de8764804c4d17aa SHA-256: 0a7df8224e664058d1d1ffb25f9e22a733dbb54cf209d5bc373365f5b885c9ee
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a lure related to a 'certificate of employment for visa' and embeds a URL pointing to a suspicious domain. ClamAV and ML classifiers have identified this PDF as malicious, specifically as a phishing trojan. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/wix?keyword=certificate+of+employment+for+visa
    • https://cdn.sqhk.co/jisaside/aVkieLD/teachers_pay_teachers.pdf
    • http://procripton.com/wilalirixugob9yho8.pdf
    • https://cdn.sqhk.co/wajerewuwer/a4jqhf1/luzojodejuselurifi.pdf
    • https://cdn.sqhk.co/fuwuwoki/hjhhe57/bronze_age_tools_names.pdf
    • http://sibuvre.com/22108248220konam.pdf
    • https://cdn.sqhk.co/menasimax/aNnv9ie/grow_credit_union_contact_number_leeds.pdf
    • https://cdn.sqhk.co/pumafuki/cnOohik/kativitazukut.pdf
    • http://avlto.best/rewokadeponobowipanumi69rdj.pdf
    • https://cdn.sqhk.co/numobelez/jgihEhj/pakixogeg.pdf
    • http://kernig.online/afirmaciones_louise_hay480ca.pdf
    • https://cdn.sqhk.co/vurikede/qMghGQ3/15925966398.pdf
    • https://cdn.sqhk.co/wakewafo/hhbjhhj/70291311893.pdf
    • http://itasummer.fun/properties_of_exponents_review_worksheet_answer_key74j2q.pdf
    • http://luchdobro.site/669580894898eme9.pdf
    • http://lnstagramlivesupportcenter.com/36381821985tmn7r.pdf
    • http://raisinshq.pro/how_thick_is_the_suns_atmosphereeddbk.pdf
    • http://scoretdho.best/hide_and_seek_game_wedding_moviefv15w.pdf
    • https://cdn.sqhk.co/tajiwikiter/jjhcChc/virgin_pulse_wellness_rewards.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/paxunu/report_a_crime_anonymously_nz.pdf
    • https://s3.amazonaws.com/xufaxoferugod/60827096208.pdf
    • https://s3.amazonaws.com/loranoduzuja/42865141160.pdf
    • https://s3.amazonaws.com/falejogajir/gta_five_cheats_how_to_spawn_a_helicopter.pdf
    • https://s3.amazonaws.com/fosawef/everton_fifa_20_career_mode_guide.pdf
    • https://s3.amazonaws.com/nisiwanolom/holoenzyme_and_apoenzyme.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001112a.bin
144cd4e4fbd4932ca09cf4daf100a8c5452c2ff10e7626814845ded9d6273868
pdf-font-stream PDF embedded font (sfnt) at offset 0x1112A 5228 bytes
font_01_sfnt_off000122e8.bin
181a21619873c342956dfa5f8bdb53bf872a9f5b498640cde46608c6b4c1d8c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x122E8 10964 bytes