Malicious PDF — malware analysis report

Static analysis result for SHA-256 702d8fea44e49de4…

MALICIOUS

PDF

65.6 KB Created: 2021-02-27 15:06:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fd9a2616684e7de0b17682bf87484e7 SHA-1: 1d122438b5e4bec51e02b78cc00184af161b1fb9 SHA-256: 702d8fea44e49de422bf54166e877e08c14477f5066314b4b928edd5a2e437b7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI and the nature of the detection suggest it's designed to lead the user to a malicious resource, likely for credential harvesting or further payload delivery.

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://golowaki.ru/123?utm_term=asus+wireless+router+rt-n12hp+setup
    • http://bovewitavivebu.getenjoyment.net/takebelabubolu.pdf
    • https://sasadonosixez.weebly.com/uploads/1/3/5/3/135332683/zutexe_josikowetis_pesaxoleginakuz.pdf
    • http://nakekizedexu.getenjoyment.net/a_la_recherche_du_temps_perdu_proust_commentaire.pdf
    • http://lomigakorak.getenjoyment.net/netozawajuriwapebijag.pdf
    • http://dalovujunaguk.22web.org/algorithms_sedgewick_4th_edition.pdf
    • https://mexasazage.weebly.com/uploads/1/3/4/5/134513067/wofobaveber-xexaxarabukena.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tiluwisulepam/jobojuxaxadi.pdf
    • http://zerodawoti.rf.gd/java_8_stream_map_replace_string.pdf
    • http://robowogutalopet.epizy.com/biological_molecules_pogil.pdf
    • http://vubulebutaxa.epizy.com/metowoxe.pdf
    • https://s3.amazonaws.com/pilazi/limajomuxizexe.pdf
    • http://pebimomedunuzux.epizy.com/student_attendance_system_by_barcode_scan.pdf
    • http://tasibufoz.rf.gd/66520302688.pdf
    • http://mugazukadum.onlinewebshop.net/huckleberry_finn_book.pdf
    • https://s3.amazonaws.com/divelatoxa/equifax_contact_information.pdf
    • https://s3.amazonaws.com/xuxifuzituwu/23804775715.pdf
    • http://xikepidefam.epizy.com/32176955813.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_off0000c63b.bin
ca6f9b995628fadc765e9e1e2e6bfc3f240b617163f6f97512537c68b3c009d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xC63B 4992 bytes
font_01_sfnt_off0000d750.bin
2ff73a4401f006c3d39a31c3bfcf3f940ab7e8b2b926092324de51a8e18ee134
pdf-font-stream PDF embedded font (sfnt) at offset 0xD750 9936 bytes