Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a16f14efb1aecee…

MALICIOUS

PDF

72.2 KB Created: 2021-02-20 23:45:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a3065ccd1c7b2ac6a8ff0e2c05f178d4 SHA-1: cd5e2daddf0589a37c4f8b34a1f85aa878612d0f SHA-256: 3a16f14efb1aeceeccb427810384e99c0a41dc898e13f83d41cebe5a4139532f
136 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
  • 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://leonvi.ru/wix?keyword=holden+lutheran+church PDF link annotation
    • https://cdn.sqhk.co/goxobuve/iaheiiE/dazipinegebopanijamub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391909/normal_600bc51fe6e3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379385/normal_601317004f10c.pdfIn PDF document text
    • http://vashastrahovka24.ru/18003802932k1bxc.pdfIn PDF document text
    • https://cdn.sqhk.co/berirenike/xgijgid/passport_photo_hair_color_change.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391008/normal_5fd03cff65129.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/gcoKRic/virus_compared_to_bacteria_size.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/dighwqo/96878384159.pdfIn PDF document text
    • https://cdn.sqhk.co/pidodalatip/fUHb8jI/tripp_trapp_chair_cushion_pattern.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456687/normal_5feaf6f71a594.pdfIn PDF document text
    • http://grusha.space/section_5_firearms_act_1968_sentencing_guidelinescua7f.pdfIn PDF document text
    • http://daravto18.ru/rinemoqpe8u.pdfIn PDF document text
    • http://vostokzapad.su/vemevulezonowo1a5bs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385010/normal_60298ce568b41.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD343 4644 bytes
SHA-256: 7a3dee647ed4f39b49b02ea1a7f505ba48c4f24c418e47c87a00a0dc561efdcc
font_01_sfnt_off0000e2f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F5 10312 bytes
SHA-256: d0ebaa0a92de7f020964cc5ba34f0327ce9c4780d040004bd2e43d9de1bb32d6
font_02_sfnt_off00010644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10644 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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