Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fd101aaea1c51dc…

MALICIOUS

PDF

79.3 KB Created: 2021-03-16 18:23:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 67dd684c52b9b2982c4fbfad2a7cbd6f SHA-1: 207373228bffc4e48bdc546f07db30df5a0afffb SHA-256: 7fd101aaea1c51dcf11d3becda4f4bc1ef623c50b55f49c404ff7c68c0ec96ad
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, contains text related to resetting a NordicTrack treadmill, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted, but the presence of a malicious URL and the ClamAV detection strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dugedepap.ru/strik?utm_term=how+to+reset+nordictrack+treadmill+c990 PDF link annotation
    • https://birijejukuz.weebly.com/uploads/1/3/5/3/135386669/9f8df.pdfIn PDF document text
    • http://fusozurima.22web.org/94516388894.pdfIn PDF document text
    • https://damemebu.weebly.com/uploads/1/3/5/3/135316778/58e17c3cad7bfca.pdfIn PDF document text
    • https://vexibalob.weebly.com/uploads/1/3/4/8/134896466/5580876b.pdfIn PDF document text
    • https://xiliperudal.weebly.com/uploads/1/3/3/9/133999468/wozidurozazowide.pdfIn PDF document text
    • http://momivegod.22web.org/colonoscopy_screening_guidelines_usmle.pdfIn PDF document text
    • http://remalizaf.iblogger.org/5_points_of_architecture_corbusier.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/how_to_use_a_dishwasher_frigidaire.pdfIn PDF document text
    • http://bepofikoguja.22web.org/20320110004.pdfIn PDF document text
    • https://bezubimuxidisa.weebly.com/uploads/1/3/1/4/131453869/bonaziz.pdfIn PDF document text
    • http://maxirem.mygamesonline.org/gotonexubiguzixudar.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/visagogijulep/column_ledger_template.pdfIn PDF document text
    • http://xovipofeguz.epizy.com/asme_b31_1_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/door_lock_movie.pdfIn PDF document text
    • http://libizokize.rf.gd/dji_naza_lite_to_v2.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/wedizuseruduzamulesofi.pdfIn PDF document text
    • http://satikemapobivix.epizy.com/50403133206.pdfIn PDF document text
    • http://wowadepadon.rf.gd/how_to_replace_2015_corolla_battery.pdfIn PDF document text
    • http://kifugelewepin.epizy.com/ancylostoma_tubaeforme_common_name.pdfIn PDF document text
    • http://wozunajovufati.rf.gd/android_activity_xml_file.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/32445458663.pdfIn PDF document text
    • http://zebigibozudival.epizy.com/arctic_cat_illustrated_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/punuvajusaj.pdfIn PDF document text
    • http://wawukekaxemiju.epizy.com/baradamidebunupewan.pdfIn PDF document text
    • http://judogife.rf.gd/buzulig.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_off0000f572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF572 5500 bytes
SHA-256: 8aec5fe1b48c6d0d82d45a032cdb7dcbf5217b5e46f6cf3080d264060f86fbc7
font_01_sfnt_off00010820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10820 11944 bytes
SHA-256: 418b688dae9f990724d5bb86ebb3324760debd5e9c8cdcfe6e79a3355ca29baf

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