Malicious PDF — malware analysis report

Static analysis result for SHA-256 41a9ffb645a14753…

MALICIOUS

PDF

73.8 KB Created: 2021-02-22 05:21:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 19a6c02cced409b8737fdc59cdca1d41 SHA-1: 3187dc86efbe60b208273e957f0e9f0be6c57f1f SHA-256: 41a9ffb645a14753db1c6609908cb7fc360be0655a9a1f0f5538fad0095a3766
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jottigo.ru/123?utm_term=blade+inductrix+fpv+rtf+mode-1 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4484370/normal_5fd0540591c07.pdfIn PDF document text
    • http://pevojatinolotej.22web.org/51624178377.pdfIn PDF document text
    • http://glawerry.online/does_water_flossing_really_workuoe7i.pdfIn PDF document text
    • https://dutudofedibajun.weebly.com/uploads/1/3/2/8/132815365/xirutupub_fulafoj_pawamedexu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370263/normal_5fd237d2e5603.pdfIn PDF document text
    • http://sdfafq.info/brackets_punctuation_worksheetiiqye.pdfIn PDF document text
    • https://gisixumaxen.weebly.com/uploads/1/3/1/8/131856636/492fd8e52e.pdfIn PDF document text
    • http://lg-copyright.com/17181146021fhvns.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415950/normal_5ffdb917a6622.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417526/normal_5fe357c939738.pdfIn PDF document text
    • http://ueuniti.xyz/68957127017msyhx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376126/normal_602519b8ac3d4.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/xidulumexi/sebizimigetedosetiru.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/toronto_traffic_report_don_valley_parkway.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/ripevuralirutugim.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/free_simple_joomla_templates_3._8.pdfIn PDF document text
    • http://foridifakusexum.rf.gd/loading_screen_template_html.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/58243972676.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_off0000e1b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B7 5384 bytes
SHA-256: 3dcc2130eae19d5728496302dd1d364235611af269097443e986e7c7a085f84d
font_01_sfnt_off0000f410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF410 11268 bytes
SHA-256: 1cd7c8dc69e0cd2db76faf84316f3ed25b5e34123592870d93c390a18c1f8649