Malicious PDF — malware analysis report

Static analysis result for SHA-256 77046d31143df22d…

MALICIOUS

PDF

77.2 KB Created: 2021-03-01 08:49:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d04285c3101e5fee34693d395cba9211 SHA-1: 2a255f139d2bbe23736da08e34400818acc973de SHA-256: 77046d31143df22de42b67554c237983739ca80b0e6cdfbfdceedc5045f78db9
156 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, with one prominent URL suggesting a phishing or malware lure related to a common user query. The presence of embedded links and the overall structure suggest it's designed to redirect users to potentially harmful sites.

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
  • 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://xajibur.ru/strik?utm_term=how+do+i+install+google+play+on+my+kindle+fire+hdx+3rd+generation PDF link annotation
    • http://weareanonymous.org/marketing_manager_resume_sample_dochlcbq.pdfIn PDF document text
    • https://cdn.sqhk.co/ribobujir/9ichi8d/58310933947.pdfIn PDF document text
    • http://braco.ru/8993862609biuhi.pdfIn PDF document text
    • https://fowazukogapepeg.weebly.com/uploads/1/3/0/8/130873990/pevivunata-nafanozulop.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/hhcM1PT/fikoja.pdfIn PDF document text
    • http://yarrebitteh.online/pebidapijisanab90b4a.pdfIn PDF document text
    • https://cdn.sqhk.co/felinavaw/jh0KYgf/jubatoperijukuvogado.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/luramamelolem/best_fast_battery_charger_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/fiwupurok.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/rovebotabomutonog.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/avengers_logo_hd_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/najil.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/english_pronunciation_worksheets_for_spanish_speakers.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/what_is_the_moral_lesson_of_the_rainbow_fish.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/searchview_in_android_example.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/shorter_catechism_question_3.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/blackout_2008_full_movie.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_off0000eda4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA4 5904 bytes
SHA-256: ef74088f0dac602b0f339fe305d62bb42241ca33bc043f0e6d0cf813ac61e602
font_01_sfnt_off000101ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BA 10744 bytes
SHA-256: 1f20dd9bedf7fa1c5afd02882619611d1984104fbe1a08b3474e4fa7e6e034b2

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