Malicious PDF — malware analysis report

Static analysis result for SHA-256 328ae9a5f65d26fb…

MALICIOUS

PDF

68.9 KB Created: 2021-02-18 01:37:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 778bd67689ca502d43248829c1b1a703 SHA-1: 18be1ac5a779f2351aa3b827355043b2b47d0c0d SHA-256: 328ae9a5f65d26fb1179bff6635138ee51d31dff178b1212aac9533f9bffe11d
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'https://jacksth.ru/wix?keyword=scag+service+manuals', which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to 'Scag service manuals'.

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://jacksth.ru/wix?keyword=scag+service+manuals PDF link annotation
    • https://cdn.sqhk.co/bigulikexupa/f5ymOgd/bepixoruvilepo.pdfIn PDF document text
    • http://salearea.pro/audition_michael_shurtlefffdn9y.pdfIn PDF document text
    • http://erogan-columbia.site/xifogirizelireexzpq.pdfIn PDF document text
    • http://natezaka.iblogger.org/american_made_film_parents_guide.pdfIn PDF document text
    • http://frukt.space/xipozo6526.pdfIn PDF document text
    • https://cdn.sqhk.co/puninuzono/bxjEmib/pefusajedurogikojobiv.pdfIn PDF document text
    • https://cdn.sqhk.co/talurelope/ha1hehj/rizelewodug.pdfIn PDF document text
    • https://cdn.sqhk.co/wugunifikezu/vw1cuii/among_us_mod_ios_download_link.pdfIn PDF document text
    • https://cdn.sqhk.co/lanuniwa/3IVNihA/free_gin_rummy_plus_coins_easy.pdfIn PDF document text
    • https://cdn.sqhk.co/nipigagavadu/ihjhdhb/slide_away_chords.pdfIn PDF document text
    • http://pilawufatazuka.iblogger.org/18763919741.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/5Sigia7/36273000013.pdfIn PDF document text
    • https://cdn.sqhk.co/jufebarur/3Fr2fja/bijuxedes.pdfIn PDF document text
    • http://soldatskaya6.ru/farujeu8g3.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/zozuxukoxo/20752648470.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/55909064987.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/43683354676.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/epic_7_guider_aither_build.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/maxef.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/cadre_photo_numerique_grand_format.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_off0000cf5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5E 5284 bytes
SHA-256: cb50a9798f063c5635cc6d4233311d55b057417f146448cc0059d6f13cda7ed3
font_01_sfnt_off0000e14a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14A 10968 bytes
SHA-256: 22747de03179ae8dde9664d7494ec953f1876c3758b615be5e2847b22d413bc2

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