Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d975a8bfb3bdc4…

MALICIOUS

PDF

69.3 KB Created: 2021-02-08 23:04:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 12eda466e1e88c4177d237be86b644b1 SHA-1: 4fa4c483ba734af8d96e65b78b2823acf79ff1c1 SHA-256: 58d975a8bfb3bdc40afe9c61d09b0af6ca65da1b4cdcbfa54f45d7a32b3ffaa8
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/aws?utm_term=bhojpuri+movie+3gp+video+songs+free In PDF document text
    • http://gayerkan.com/sizodadizavasejlv54m.pdfIn PDF document text
    • http://fitit.space/xaxabitimukupsi4mq.pdfIn PDF document text
    • http://aromaita.space/sainsburys_lasagne_sheets_butternut_squash8zshg.pdfIn PDF document text
    • http://psylath.com/goat_simulator_goatz_apk4ot8h.pdfIn PDF document text
    • http://kpovli.ru/8108409611731214.pdfIn PDF document text
    • http://support-copyrighthelpservice-about.com/lesitiporizi5zdrg.pdfIn PDF document text
    • http://idealslimitaly-official.site/kindergarten_lined_paper_templatenrs45.pdfIn PDF document text
    • http://cosmeteca.com/703698089488w7pt.pdfIn PDF document text
    • http://ovca.space/vnsgu_bcom_booksh6lnp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zalaxorenisev.epizy.com/cheering_crowd_sounds_free.pdfIn PDF document text
    • http://kavolimuteso.epizy.com/gidigorujavanipenuwijenu.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/dubuviralolaz.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/mimubuk.pdfIn PDF document text
    • http://lesasesodimavun.epizy.com/monash_endnote_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/bulandi_movie_song.pdfIn PDF document text
    • http://wanezezigemos.rf.gd/instagram_influencer_contract_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/48660405397.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/falaz.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/63726119285.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_off0000cffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFC 5560 bytes
SHA-256: fd0425fecb5d01ae6997a2e8501ada7d7f1ea4caee523736c2a244bbc4e4170f
font_01_sfnt_off0000e2d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D7 10956 bytes
SHA-256: 2b4e8adb12faa20fd32d8824e77d7bab697767d4811d4ab57f8096470cc056d2

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