Malicious PDF — malware analysis report

Static analysis result for SHA-256 71894ccc1f1488b9…

MALICIOUS

PDF

65.6 KB Created: 2021-03-03 11:17:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6bc23e936bdd5e6fa1bf835018e6649f SHA-1: cc69983bf21bc3791068b0e5f5f2be0bef1605c0 SHA-256: 71894ccc1f1488b9699f285a71f50cd78ee062b3edb4ff339ef5c5a18b5862c2
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gimoguvi.ru/wb?keyword=how%20to%20open%20craftsman%20garage%20door%20remote PDF link annotation
    • http://vikidavilor.22web.org/magemek.pdfIn PDF document text
    • http://nuzopofe.iblogger.org/how_to_delete_p0420_code.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/K0gchkx/car_tax_and_title_calculator_ohio.pdfIn PDF document text
    • http://miwodenexiz.iblogger.org/sepupibofoxuvu.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/jebupofedijakuk/bootstrap_4_vue_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/epileptiform_activity_interictal.pdfIn PDF document text
    • http://kiduxoz.epizy.com/1041_schedule_d_capital_loss_carryover_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/ishares_exponential_technologies_etf_fact_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/blank_fitness_program_template.pdfIn PDF document text
    • http://japinoxizidunub.myartsonline.com/4715321264.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/zebamijabebuvoxuz.pdfIn PDF document text
    • http://xiwinuxad.rf.gd/sogadinuterav.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/jigavuguretezeboraduri.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/51230635210.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/copper_mountain_co_snow_report.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_off0000c504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC504 5496 bytes
SHA-256: 13799604512fb3574b48a7d549c52d51ed58e82e7e8acd19deefef2e8bbcb0da
font_01_sfnt_off0000d7b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B0 9900 bytes
SHA-256: 445af3e88b5780a0b51006d6b338b17854ae434abe06a84f8e2a463c574eed70