Malicious PDF — malware analysis report

Static analysis result for SHA-256 34792b6b5e5dc2b2…

MALICIOUS

PDF

121.0 KB Created: 2021-03-22 20:18:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 6d1445af705e5133fff5151fb66371c3 SHA-1: b21af973a8dcc2650e568e6ca54f90597a010c4a SHA-256: 34792b6b5e5dc2b2b50017ec04f1e6cfc237bf4bd51b7e748e8e904f0e5f8701
226 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1203 Exploitation for Client Execution

This PDF document was flagged by ML classifiers and ClamAV as malicious. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection infrastructure. Crucially, it includes a 'Clipboard command execution lure', instructing the user to copy and paste content into a shell, which is a common technique for executing malicious commands or downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://bologen.ru/wix?keyword=luxpro+psd111+manual+espa%25C3%25B1ol PDF link annotation
    • http://activa-fb.com/95938270975xa2l8.pdfIn PDF document text
    • https://kotevopokevunab.weebly.com/uploads/1/3/4/5/134590751/gowagurug_bojomoripovesu.pdfIn PDF document text
    • https://xulakuvoloja.weebly.com/uploads/1/3/0/8/130813987/5fc6e3161252.pdfIn PDF document text
    • http://giveaway2020.info/congratulation_celebration_song_free8wzyv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467612/normal_602a54329b3fb.pdfIn PDF document text
    • http://trynutra.shop/vampire_diaries_season_8_episode_14_soundtrackxkz70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462697/normal_6000f4845669d.pdfIn PDF document text
    • https://gekiwudev.weebly.com/uploads/1/3/4/7/134769606/869dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378855/normal_6019ac2b038ef.pdfIn PDF document text
    • https://gizivesokopupa.weebly.com/uploads/1/3/2/6/132696604/piluxaderawa.pdfIn PDF document text
    • https://kukutapiroboj.weebly.com/uploads/1/3/4/7/134712573/fobixelol_dezodun_kodusuke.pdfIn PDF document text
    • https://fulopovesaj.weebly.com/uploads/1/3/0/7/130740112/vegeni_pekubowikuzojo.pdfIn PDF document text
    • https://mafobosapufi.weebly.com/uploads/1/3/4/5/134505980/729679ebf1.pdfIn PDF document text
    • http://dibubewivutuva.22web.org/hisense_h50be7000_review.pdfIn PDF document text
    • https://jupavovol.weebly.com/uploads/1/3/4/3/134314217/guzakuziniruses-wowinogipaju-besewimesefup-detivadifot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://weluwekew.epizy.com/blood_orange_piano_sheet_music.pdfIn PDF document text
    • http://kuxorexijamez.rf.gd/pushkin_captain_s_daughter.pdfIn PDF document text
    • http://xewofikedufika.epizy.com/76623555379.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/dell_latitude_e6530_core_i7_3rd_generation_price_in_pakistan.pdfIn PDF document text
    • http://garapaf.epizy.com/yageo_ceramic_capacitor_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/gemurujifeniz.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/xaxaneterijomokufun.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_off000197e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x197E4 5380 bytes
SHA-256: 0192992945713a91f4f929d5a2483255770a94086c73a32842c464046a983c0a
font_01_sfnt_off0001a9dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A9DD 13632 bytes
SHA-256: 5580389e319e7a56a5a7e42c9bfd34c46a14be25474b9f8338dcdba98c8e437f