Malicious PDF — malware analysis report

Static analysis result for SHA-256 56544939e63ce204…

MALICIOUS

PDF

85.2 KB Created: 2021-02-22 01:15:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 07faca42a7c73ef8dce376ae265f7ed7 SHA-1: 1f0fdc9886567c8e3710cfadff2f02eb979188ca SHA-256: 56544939e63ce20418cded7cfad5f1bb5123fc6077e7381db88ea62d9850053f
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a link farm, with the primary URL being a search result for 'type of hookah hose'. This suggests a phishing or SEO poisoning tactic to drive traffic to potentially malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://druttle.ru/wix?keyword=type+of+hookah+hose PDF link annotation
    • https://bunonosuvon.weebly.com/uploads/1/3/5/9/135976801/dubukogaketu_tosepilareweju_tuvopefibasof.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/f4tT0he/30510967766.pdfIn PDF document text
    • https://cdn.sqhk.co/manowipete/lAjjmBj/83264670860.pdfIn PDF document text
    • https://cdn.sqhk.co/felebamifuk/iPN7jh8/hearts_of_iron_4_tutorial_italy.pdfIn PDF document text
    • https://wojodusu.weebly.com/uploads/1/3/2/8/132815854/8694600.pdfIn PDF document text
    • http://znakomstva69.space/mevopaduxrvdh.pdfIn PDF document text
    • https://cdn.sqhk.co/dovoxukeni/ijaAZjM/it_s_aumsum_time_app.pdfIn PDF document text
    • https://salubekera.weebly.com/uploads/1/3/2/7/132740515/166335.pdfIn PDF document text
    • https://zoguripan.weebly.com/uploads/1/3/1/0/131070442/7449650.pdfIn PDF document text
    • http://debagigitefofo.iblogger.org/numl_admission_form_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/boxepupovemu/eija9UR/kukawutokupugame.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/android_version_free_update.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/94391613078.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/free_background_power_point_kesehatan.pdfIn PDF document text
    • http://xawoforusur.epizy.com/broaching_machine_specifications.pdfIn PDF document text
    • http://bizepusozuj.epizy.com/25796100927.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/98663274652.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/equations_and_inequalities_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/79078566537.pdfIn PDF document text
    • http://tujiritam.epizy.com/beiimaan_love_songs_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/naqaab_bengali_movie_hd_video_song.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_off000112f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112F1 4976 bytes
SHA-256: ee67d324c1d6038defea026840f8f8bd4efe550a3bcd694a67da960371b13bb2
font_01_sfnt_off000123eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123EB 10412 bytes
SHA-256: 9a93c7d08a35aa7735f7d4002d8d8d87f95b3eba4bd74ab11d85e10f6ae6013b

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