Malicious PDF — malware analysis report

Static analysis result for SHA-256 0885d5210b9faf2d…

MALICIOUS

PDF

70.2 KB Created: 2021-01-27 11:57:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 33bc6562d8915a5e48c29cd5d851817f SHA-1: 4e64d388297de29b4e8be5e7f799587563fa9e73 SHA-256: 0885d5210b9faf2d605737ae5071e5c7e288eeaba24bb5271447b8c5e16285ab
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • 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=bmtc+bus+routes+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4454984/normal_5ff3d1ed12552.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/hguU1id/29213793897.pdfIn PDF document text
    • https://cdn.sqhk.co/tefulobesa/gchfsUb/18087292498.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/F3ohgrb/color_museum_houston_tx.pdfIn PDF document text
    • http://50offshop.info/dayz_60_mapcyf16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491433/normal_5fe6c8d896b38.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/fibjhii/juicy_fruit_gum_ingredients_xylitol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369630/normal_5fe774206b2a1.pdfIn PDF document text
    • http://tedewirivotu.iblogger.org/bahubali_2_movie_hd_tamil_1080p.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/gjjiit2/streamlabs_multi_stream_twitch_and_mixer.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/geKGThd/27479416601.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411252/normal_5fdf87f51b791.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476140/normal_5feb2023e72ac.pdfIn PDF document text
    • https://cdn.sqhk.co/jenuluvonuz/heIjhje/zombies_run_5k_apple_watch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://redusaboj.epizy.com/basketball_stars_hack_apk.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_off0000d737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD737 5248 bytes
SHA-256: 5b2d7764c4694e833a79e56cfabcd82b5f594621e4dcb07bb1ea29a70c8d7a4f
font_01_sfnt_off0000e8f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F8 10344 bytes
SHA-256: 55bb81bab2f71103a95c9e81d9f52fb192e0cef668ff10d90e0f99a668481bba