Malicious PDF — malware analysis report

Static analysis result for SHA-256 95a5342a2aad8742…

MALICIOUS

PDF

80.4 KB Created: 2021-03-11 06:49:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 310d2d95c6fec7aeb49a82db71860826 SHA-1: 12bf62fb11096549e81cfdf0bcf7c139b8873096 SHA-256: 95a5342a2aad874238deeee3db333023bbbb440db6bb6c3eb5feb929d5f571e9
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'advantages of science and technology pdf'.

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://lozipotod.ru/award?keyword=advantages+of+science+and+technology+pdf
    • http://vknacruckalaikov123.xyz/54308906908tjlbk.pdf
    • http://evakuator-uga.ru/kosaxufor4b9wd.pdf
    • http://usblighter24.site/kapalalgi098.pdf
    • http://proita.space/all_hd_movies_appqjgl9.pdf
    • http://tertov.xyz/verbos_irregulares_en_ingles_en_pasado_simple_y_presente_simple60vkf.pdf
    • http://mushygushysayings.com/fonterra_nz_annual_report0u962.pdf
    • http://checkmyscore.info/534612781114bxb.pdf
    • http://tiktokfrance.fun/91765916498kbro4.pdf
    • http://shoppingyxplus.xyz/lorabobigasijifukobu3nmm0.pdf
    • http://moresukko.ru/pabiwepujitepidopiritoy4c.pdf
    • http://citimart.online/fique_rico_ou_morra_tentando_downloam6bcx.pdf
    • http://verifybadgesbusiness.com/webuwutamurivobuzorelhmtj.pdf
    • https://static.s123-cdn-static.com/uploads/4391317/normal_5ffd3827ce633.pdf
    • http://pestore.pro/8th_grade_scientific_notation_worksheetovue2.pdf
    • https://cdn-cms.f-static.net/uploads/4473039/normal_6044d46709721.pdf
    • https://cdn-cms.f-static.net/uploads/4393020/normal_603f24b5579dc.pdf
    • http://b2b-servis.ru/what_are_the_30_stocks_that_make_up_the_dow_jones_industrial_averagen8ldl.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c06d0e12-d7a3-4dca-bfe1-31726ae5a80c/zofigosoremererunutiv.pdf
    • https://uploads.strikinglycdn.com/files/1acc1ff0-a9bd-4823-a2e3-b2dcc98f4be2/julian_date_calendar_2020_converter.pdf
    • https://uploads.strikinglycdn.com/files/78f0d3df-faf9-4291-9971-1c299cb75a16/examples_of_socratic_questioning.pdf
    • https://uploads.strikinglycdn.com/files/276da53b-50d9-4f4b-bfea-25c66aba420a/tidafezugewesogepenako.pdf
    • https://uploads.strikinglycdn.com/files/ca8c7246-7618-487e-af6b-7802135282fa/20616354666.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_off0000ff0a.bin
c9fd8f0d6f30aab69dc8ce955d7a0768cefaaf51017eae84275bbda84c171ec7
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0A 5472 bytes
font_01_sfnt_off000111c5.bin
17e1e71797a6285339b4b2b55a5a911b9a5cc97d6c0fb332959c275357a85998
pdf-font-stream PDF embedded font (sfnt) at offset 0x111C5 10160 bytes