Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b95a734cc63196d…

MALICIOUS

PDF

75.3 KB Created: 2021-03-18 02:15:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 517fc681bb7b800d0be636866ea0024f SHA-1: 40854d06c7eb5f2ffce035a973fc2d8c8f74f91a SHA-256: 2b95a734cc63196d1ea017fd623b1e5e76d5b95397dfdb66212034a98c752774
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily corrupted, contains text related to a sale, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/strik?utm_term=ee+cream+mini+dachshund+for+sale
    • https://wefapewirevuvik.weebly.com/uploads/1/3/4/6/134667644/luwiviliw-fugoso-wopexir.pdf
    • https://cdn-cms.f-static.net/uploads/4419654/normal_6037769c39d6c.pdf
    • http://sakivometo.medianewsonline.com/white_blood_cells_function_and_structure.pdf
    • https://cdn-cms.f-static.net/uploads/4477863/normal_6018e39bcd72c.pdf
    • https://xavamukunakupa.weebly.com/uploads/1/3/1/4/131437969/4c574e.pdf
    • https://static.s123-cdn-static.com/uploads/4449992/normal_5fe3bf8687618.pdf
    • http://zofunubesosena.mypressonline.com/3936797230.pdf
    • https://jodexozemusokut.weebly.com/uploads/1/3/3/9/133999246/536222.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tofufelu.epizy.com/75035087120.pdf
    • https://uploads.strikinglycdn.com/files/6b486bbc-9a99-4203-9ccc-dca5a85d1fb0/libotufatefodanuwov.pdf
    • http://duxegejuw.atwebpages.com/canoscan_9000f_mark_ii_scan_to.pdf
    • http://risepaxazitomep.rf.gd/781923438.pdf
    • https://s3.amazonaws.com/bubeto/sebizef.pdf
    • https://uploads.strikinglycdn.com/files/aa13fe2b-e69a-4b3f-9d16-2dbb6d458298/66255074086.pdf
    • https://uploads.strikinglycdn.com/files/166f197d-f8e8-4c9d-a3ca-ac72fe2d8f87/dotefife.pdf
    • http://doriponesarom.myartsonline.com/what_is_the_importance_of_potential_and_kinetic_energy_in_our_daily_life.pdf
    • http://bulujulu.rf.gd/70377747011.pdf
    • https://s3.amazonaws.com/zamuriza/nordictrack_audiostrider_990_power_cord.pdf
    • http://dowirefe.rf.gd/nisisunamunapibanazop.pdf
    • https://s3.amazonaws.com/patilawasu/simbolos_para_diagramas_de_flujo_de_procesos_industriales.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_off0000e990.bin
d16005da5b0a897f452b2949b3910575b8da6663d1021ce0941c9c783483b7bc
pdf-font-stream PDF embedded font (sfnt) at offset 0xE990 5216 bytes
font_01_sfnt_off0000fb20.bin
eb9d339ad12a8ad7c201fa87f20bbb6a5e0aa29a462ccc130a7ef5805a157d42
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB20 10948 bytes