Malicious PDF — malware analysis report

Static analysis result for SHA-256 54f53322ec71457e…

MALICIOUS

PDF

81.2 KB Created: 2021-03-10 19:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 65eb967d614f51df2e75ff676688f274 SHA-1: 8080f9db1075b708bf0fdcbd623c953e93884b31 SHA-256: 54f53322ec71457eb178bb1bed5cb42741f78ce0d4ec3bedc0d575bede05683f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 redirect the user to a malicious site. The document body, though heavily obfuscated, contains keywords related to 'Google API spreadsheets python', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/123?utm_term=google+api+spreadsheets+python PDF link annotation
    • http://tegor.xyz/3884414078znhbl.pdfIn PDF document text
    • http://taforojujutusig.mygamesonline.org/barefoot_investor_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382193/normal_60359efe33583.pdfIn PDF document text
    • http://loneresel.mygamesonline.org/will_there_be_another_hunger_games_book.pdfIn PDF document text
    • http://ersoil.fun/2020_ford_super_snake_truck_price39o2b.pdfIn PDF document text
    • https://supipujijasof.weebly.com/uploads/1/3/0/7/130739476/bobufiwa.pdfIn PDF document text
    • http://hookup671.site/jonuregiwunosesorisedzame.pdfIn PDF document text
    • http://tersq.fun/datulapiwametubumcsmn3.pdfIn PDF document text
    • http://xuvaxujogilo.mygamesonline.org/59121255274.pdfIn PDF document text
    • http://pakirekugep.scienceontheweb.net/eureka_central_vacuum_replacement_hose.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445745/normal_5fcfb842e3ec3.pdfIn PDF document text
    • http://zokugorevat.mywebcommunity.org/hp_laserjet_pro_400_color_m451dn_paper_jam_tray_1.pdfIn PDF document text
    • https://degezumibupupek.weebly.com/uploads/1/3/4/8/134862322/zebidapu.pdfIn PDF document text
    • https://foxujutuz.weebly.com/uploads/1/3/4/3/134348357/pozawoj-mowakesopulij-favuribap.pdfIn PDF document text
    • http://bit7.top/php_code_beautifier50ytn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/is_a_phd_in_molecular_biology_worth_it.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/bodybuilding_quotes_wallpapers_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/2901847647.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/simunimi.pdfIn PDF document text
    • http://nununad.myartsonline.com/kexatugetaxizipo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB89 5352 bytes
SHA-256: 768e460725176374afbeaf1b0076aa5469612a83cf57b639aa77bf18c0650efe
font_01_sfnt_off0000fdb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB7 1728 bytes
SHA-256: d165ae4d83dd613087195bf72709767423eba952415580ff8d315dee306433fc
font_02_sfnt_off00010652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10652 15848 bytes
SHA-256: 10995a828345140245e177e3c77bd0380a43897118e3031826139ffe1bab6990

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