Malicious PDF — malware analysis report

Static analysis result for SHA-256 193283864e2946e8…

MALICIOUS

PDF

74.2 KB Created: 2021-04-02 20:20:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 998b21ba789a48550924cafa35351b21 SHA-1: c9ecbf1fd259f2a09a36d44ccbc5bcf60bfdb321 SHA-256: 193283864e2946e84af585bd693a40e3705716e867c7fc69b93efaff5ace7cd0
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to a book title, suggesting a phishing or social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/award?keyword=knowing+god+intimately+joyce+meyer+pdf
    • https://jaxoruxevag.weebly.com/uploads/1/3/1/6/131606876/6658653.pdf
    • https://tadeliganunuzax.weebly.com/uploads/1/3/0/9/130969808/wuduwuvugomivuzari.pdf
    • https://mirijanonukuzo.weebly.com/uploads/1/3/2/7/132740352/sepiwu_fimedunaxavojoj_povafuw.pdf
    • http://fegokodelaxen.scienceontheweb.net/jubogufuzoluginibebasazo.pdf
    • https://cdn.sqhk.co/gefimiwotux/ixiibjb/mokejazawopi.pdf
    • https://cdn.sqhk.co/lewatesudo/naqkXNI/sample_undertaking_letter_format.pdf
    • http://nawireg.22web.org/caida_libre.pdf
    • http://wawejamivejaxu.22web.org/63305334724.pdf
    • http://gubilof.22web.org/58884719633.pdf
    • https://cdn.sqhk.co/rogenujudita/5ihedy1/random_facts_you_didn_t_want_to_know.pdf
    • https://cdn.sqhk.co/nejisakatok/jeN0jcU/sotukekolebinutaw.pdf
    • http://bavedibigilomit.66ghz.com/jakekas.pdf
    • http://sifimomikev.sportsontheweb.net/visusasur.pdf
    • http://gudelew.mywebcommunity.org/how_to_programme_grasslin_timer.pdf
    • https://motabuwupogofe.weebly.com/uploads/1/3/1/6/131607229/893067.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1f4013c6-861c-426f-a5a0-f5d72ae827d4/88568673296.pdf
    • http://wijabotivov.epizy.com/98851233285.pdf
    • http://jaxuziwemulogel.rf.gd/denutikapivogese.pdf
    • http://turijebudeta.rf.gd/fleckney_primary_school_ofsted_report.pdf
    • https://uploads.strikinglycdn.com/files/d1a03197-e25a-4d9d-92c1-94a2cfc12812/california_apartment_rental_agreement_template.pdf
    • http://tososite.onlinewebshop.net/one_of_us_is_lying_audiobook_google_drive.pdf
    • http://zareguzoveral.epizy.com/online_books_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e422.bin
2cc04633cc82c8e87396d58a407d9fbcc5ceba56e8597690e27a2804e76a907a
pdf-font-stream PDF embedded font (sfnt) at offset 0xE422 5536 bytes
font_01_sfnt_off0000f70a.bin
91797e649b0e2d5056d7441bb7115860fa1886301eda21c2ad781f85a5d7220a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF70A 10712 bytes