Malicious PDF — malware analysis report

Static analysis result for SHA-256 32303c0763b5e562…

MALICIOUS

PDF

82.2 KB Created: 2021-04-07 17:49:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b553c7300af5d00625efc925a07e9bd8 SHA-1: b01e06ec338dcb5f982336d13c07ab7bb2efc498 SHA-256: 32303c0763b5e5623a3c4157c21a2a244e674a8ef9df78df0893f6707d7839b8
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs to a domain associated with phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to 'tax credit questionnaire amazon', suggesting a lure to trick users into clicking the malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/wix?keyword=adp+work+opportunity+tax+credit+questionnaire+amazon
    • http://rawitotizoxuk.scienceontheweb.net/eudralex_volume_4_annex_15.pdf
    • https://static.s123-cdn-static.com/uploads/4385410/normal_5fe4aed3807fa.pdf
    • http://rezumitisud.mygamesonline.org/zetujexowubonekumaz.pdf
    • http://rozujed.sportsontheweb.net/a_practice_grammar_of_german.pdf
    • http://about-central.com/75313527200lulb7.pdf
    • http://antinomi.design/physics_in_hindi_2019_downloadip48a.pdf
    • https://cdn-cms.f-static.net/uploads/4421205/normal_6068687e680de.pdf
    • https://tewonubipudi.weebly.com/uploads/1/3/6/0/136016370/rejav.pdf
    • https://dolujutizividev.weebly.com/uploads/1/3/4/8/134864897/4a20436b.pdf
    • https://xowimigijik.weebly.com/uploads/1/3/1/6/131637135/nuwetatabitukigi.pdf
    • https://vibemabejux.weebly.com/uploads/1/3/4/6/134668328/de8521ef4.pdf
    • http://presente-top.store/237129623130qu1v.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/85ab5987-a3b9-46ce-baba-60de356d786f/42294213045.pdf
    • http://melamodusede.rf.gd/jikidux.pdf
    • https://uploads.strikinglycdn.com/files/bde5d60c-4b38-4fe4-911b-dedeb590af9b/2903958436.pdf
    • https://uploads.strikinglycdn.com/files/1f6c9fdf-8a60-4cfb-80cb-71264540ee55/sony_bdp-s3500_region_free_wifi_blu-ray_dvd_player.pdf
    • https://uploads.strikinglycdn.com/files/49729c54-4c51-4451-9fca-ed1045e5ebb0/resumen_del_libro_del_secreto_del_amor.pdf
    • http://wegamaluperetuj.atwebpages.com/anthem_by_ayn_rand_download.pdf
    • http://fopopas.epizy.com/pdf_to_word_apk_pure.pdf
    • http://lamekukibudinos.epizy.com/lesson_3_summary_antebellum_america_answers.pdf
    • http://mipusefifiwud.epizy.com/6574786114.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_off000100e6.bin
03bb50d5dae13867dfa9f27f35b8d7ced9cfd6374b021e5170838337620545b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x100E6 5676 bytes
font_01_sfnt_off0001144b.bin
1f60bf713fa9187b4430bd5f75a6e5f75f800fa7573d5e058292e7a637db2ba2
pdf-font-stream PDF embedded font (sfnt) at offset 0x1144B 11232 bytes