Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b79d10db7f2940…

MALICIOUS

PDF

70.2 KB Created: 2021-02-12 11:42:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b1ccb80942aeee91b65d4c33de6b64b8 SHA-1: c0bd3448498153e1afe071eae82e3c5cb9ad6e4d SHA-256: 64b79d10db7f2940c434f68966e2e283ddd597a875049ada986a8b634b8901f4
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'jottigo.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'The adventures of brer rabbit and friends', aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/123?utm_term=the+adventures+of+brer+rabbit+and+friends PDF link annotation
    • https://cdn.sqhk.co/sikereri/ifU7gjN/67783374911.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobuwaxegu/fUieiib/premier_league_football_players_salary.pdfIn PDF document text
    • https://cdn.sqhk.co/wupifufexix/hbiawgh/ziteguzinawotifelunom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424689/normal_601799e191027.pdfIn PDF document text
    • https://cdn.sqhk.co/rewakevutel/fhhUOhd/scruffy_beard_length.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408707/normal_5fea46ace793c.pdfIn PDF document text
    • https://cdn.sqhk.co/buruvalufe/hfwygim/easy_trick_shots_to_do_at_home_basketball.pdfIn PDF document text
    • http://lazezubeb.22web.org/anatomy_and_physiology_dictionary_free.pdfIn PDF document text
    • https://cdn.sqhk.co/dusaradezat/b3HIgf3/wuzebaderumepotejuxu.pdfIn PDF document text
    • http://kufigada.22web.org/kepler_s_law_of_planetary_motion.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/jhsrUvi/lucky_clover_mallet_putter_cover.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485576/normal_600a8f49df3d4.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/pajeriramal/fejamirad.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/treasury_currency_manipulation_report_2019.pdfIn PDF document text
    • http://sezusol.epizy.com/birthday_bunting_template_printable.pdfIn PDF document text
    • http://warepeg.rf.gd/eight_below_movie_300mb.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5DD 5112 bytes
SHA-256: 6bfeaba0499335730fff320067a6bc26f48791cb8e6cbb212ea1d33d9a7eedbd
font_01_sfnt_off0000e741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE741 10596 bytes
SHA-256: 827cb28f0f4005a380e8586993bccd251404d402161c5acb0a807ca24eaf8d43

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