Malicious PDF — malware analysis report

Static analysis result for SHA-256 afdf7ccd831bb0cd…

MALICIOUS

PDF

71.1 KB Created: 2021-03-25 08:04:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72d8eebe86664fb0620ddb676b50b233 SHA-1: 730e21ee978cce1d91244b13660d2896d26ec110 SHA-256: afdf7ccd831bb0cd373adff2ca2ad0e0cc60ab63bf921e09a721156493824dd1
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 URI pointing to a suspicious domain, identified as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of external URIs suggests the document is designed to redirect users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://kuzutuzo.ru/award?keyword=decimal+addition+word+problems+pdf
    • http://nopotaz.medianewsonline.com/second_law_of_thermodynamics_nptel.pdf
    • http://milesatel.mygamesonline.org/robadu.pdf
    • https://cdn.sqhk.co/purorenutuw/gBRighb/78124710006.pdf
    • http://digovin.getenjoyment.net/neganavavakakuvup.pdf
    • https://cdn.sqhk.co/vibisidumes/gjZic5r/56222079315.pdf
    • http://kigetipopizatij.getenjoyment.net/antenna_directivity.pdf
    • https://cdn.sqhk.co/gujuvizaja/jhwtEgd/cover_orange_journey_1-_30.pdf
    • https://cdn.sqhk.co/kowowulixak/djLjjJY/vakulifa.pdf
    • http://zitalogeloluwiw.mygamesonline.org/76089394193.pdf
    • https://cdn.sqhk.co/reposivekow/igeqifP/sasakejizurenutamamir.pdf
    • https://cdn.sqhk.co/jugemito/ejhiezt/2d_vector_c_undefined_size.pdf
    • https://cdn.sqhk.co/gituridewo/hicMGsB/fimegakos.pdf
    • https://cdn.sqhk.co/kekelivig/gjBpY9C/download_nfs_heat_studio_mod_apk_terbaru.pdf
    • https://cdn.sqhk.co/kululojilo/Vgjjjb3/70880756257.pdf
    • https://cdn.sqhk.co/firijanab/qhhgegd/internal_control_over_financial_reporting_icofr.pdf
    • https://cdn.sqhk.co/nomitusibop/dhb1Pig/26517435350.pdf
    • http://wumiwuzigimo.mywebcommunity.org/lidavunosiwejuwele.pdf
    • https://cdn.sqhk.co/rewakevutel/c8gjkid/final_castle_defence_mod_apk.pdf
    • https://cdn.sqhk.co/zokuwagopole/hdic3Ef/tripp_trapp_tray_instructions.pdf
    • https://cdn.sqhk.co/dumadomizore/Sghc7bv/moxusudekafuberi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zurovajij/72250408314.pdf
    • https://s3.amazonaws.com/wofaxil/tekosotexuwelirujujezup.pdf
    • https://s3.amazonaws.com/tuxalowafokuvo/first_holy_communion_catechism.pdf
    • http://wovodijulenape.onlinewebshop.net/12th_zoology_practical.pdf
    • https://s3.amazonaws.com/folexapurilowe/severe_chiari_malformation_type_1.pdf
    • https://s3.amazonaws.com/lekezaru/85018298102.pdf
    • http://futebowa.atwebpages.com/28325989168.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_off0000d7e2.bin
eb7bb409e38d81994139374753b6ac7caeae45610175b53ea9615ccc48036eb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E2 5532 bytes
font_01_sfnt_off0000eaa5.bin
9cb44f6fbbc49b2bb046934eff2ca5ec23902a906b2aafec43e2eb364c9e3989		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA5 10548 bytes

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