Malicious PDF — malware analysis report

Static analysis result for SHA-256 a482b60857a0a081…

MALICIOUS

PDF

79.6 KB Created: 2021-03-13 23:08:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c810ce96216c70039a4851c805fc9f03 SHA-1: 81e9a4f09c5eed6c7c6e3a6e08bd034b24914379 SHA-256: a482b60857a0a08115e5f0ca7c9ecc9b0da193a029d8116b607fd2068ef40580
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 URL pointing to 'baarspo.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to reference 'wwe bleacher report smackdown preview', suggesting a lure to attract user clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/123?utm_term=wwe+bleacher+report+smackdown+preview PDF link annotation
    • http://wozilimesiz.mypressonline.com/how_to_set_iso_on_hasselblad_500cm.pdfIn PDF document text
    • http://weridif.medianewsonline.com/63920558444.pdfIn PDF document text
    • http://xibiselid.medianewsonline.com/skyrim_se_skyui_error_code_4.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/lexiwukaruvagar.pdfIn PDF document text
    • http://gunofixe.medianewsonline.com/lisubovivuletabu.pdfIn PDF document text
    • http://kraftmann.su/bufafokimevipamupapavljhn4.pdfIn PDF document text
    • http://erogancolumbia.site/anita_woolfolk_educational_psychology_12th_edition8y9rd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://68fdcf0a-b1f0-4758-9edf-48d2be6d990b.filesusr.com/ugd/ac51ce_b6e99c5121be4ab3941ca815b33b6fed.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/lafilejiribizujul.pdfIn PDF document text
    • https://ddb1515c-011f-4d6c-9a6c-b305a2039a85.filesusr.com/ugd/477ac5_23e7b509d70340ab9e122736bd78b78e.pdf?index=trueIn PDF document text
    • http://nalujisutu.epizy.com/44322245336.pdfIn PDF document text
    • http://suxijiwuxupan.epizy.com/the_maze_runner_ending_scene.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/58420608492.pdfIn PDF document text
    • http://ligoroxenafof.atwebpages.com/chick-fil-a_nutrition.pdfIn PDF document text
    • https://b7e73dfe-ad35-4791-b4f7-7500f5b7882c.filesusr.com/ugd/bc79a4_75f43c6bad934d05a3ea63802dbc0a26.pdf?index=trueIn PDF document text
    • https://8fa10226-37c2-454d-bd65-ced70ecbf0c4.filesusr.com/ugd/c34aa9_b174c8f142bb4f388a1c4abce1861cfc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/ordeal_by_cheque_assignment_answer.pdfIn PDF document text
    • https://5e73d190-47a4-4ead-99bf-7e9069f06a16.filesusr.com/ugd/55cc32_bd5a0ab0ac9a41e397d8a336c0ea4986.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/kuzojifuzuruwatogobisilo.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/xobegik.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C5 5680 bytes
SHA-256: 80ff0f571f96741e669b732731271621200a3b297d81e1c3f22c8299f5501432
font_01_sfnt_off00010c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C02 10752 bytes
SHA-256: 82b6cfc917cecd7b70fba02ecd85dcc389b1a1d799ac25c956b446f41a17b651

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