Malicious PDF — malware analysis report

Static analysis result for SHA-256 b52beddde8d6abaf…

MALICIOUS

PDF

69.3 KB Created: 2021-03-20 16:50:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1da6d2ae71ecc7a7f46780eafe0565e6 SHA-1: 93d1b18e620e5ae6059c4bac754e44512fef02a8 SHA-256: b52beddde8d6abaf054b5184c49113b1d467b5b2eee53ba5bade97d6a93e8978
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'sequencing sheets', which is a common tactic for phishing or malware distribution.

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://baarspo.ru/123?utm_term=the+very+hungry+caterpillar+sequencing+sheets PDF link annotation
    • https://cdn.sqhk.co/zojudaje/gcWbt7k/infighter_guide_lost_ark.pdfIn PDF document text
    • http://4kuhd.me/82071814994oa817.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405420/normal_5fd368711a521.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/predator_generator_9000_vs_8750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459774/normal_602c7a63c07c4.pdfIn PDF document text
    • http://car-test.pro/vodajuginuxarolibuxudja4bz.pdfIn PDF document text
    • http://fofolep.mywebcommunity.org/adobe_indesign_cc_classroom_in_a_book_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/kefivaxepaj/fPwLg2P/64008939613.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476123/normal_60112b40cf518.pdfIn PDF document text
    • http://honey-love.ru/wudexotodarzw7mo.pdfIn PDF document text
    • http://sovuradema.medianewsonline.com/xaxebotegewu.pdfIn PDF document text
    • http://sejerodetupumil.medianewsonline.com/bejetoxeti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390381/normal_5fcaeb7378fa8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374954/normal_60435afb07a5d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://juludiripo.myartsonline.com/does_the_raven_method_work_for_shifting.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/frosty_the_snowman_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/61540061422.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/pekujibimo.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/migopufagez.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_off0000d13b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13B 5432 bytes
SHA-256: 6bac0ed7c0429c484a0fe0074c65c7663fd01646a33a8c1d64c0def248808b0d
font_01_sfnt_off0000e3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C4 10532 bytes
SHA-256: d2099acd25d1dacc7bd8b8995fcd6ddbe39cfdfde09737fd474459b3baa50aad

Open this report in the interactive analyzer, or submit your own file for analysis.