Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5ab96ab72acb811…

MALICIOUS

PDF

65.8 KB Created: 2021-02-13 19:50:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b183bfca88cb595cec6eeb407d289a5f SHA-1: 9104a65291f51b63c76ecd03c053ffccdcce6f71 SHA-256: a5ab96ab72acb8118254351616bb5d75ff6a419e05a8c418b2ace0394a79fb6d
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://jottigo.ru/wix?keyword=frigidaire+professional+gas+range+fpgh3077rf+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454671/normal_601d8a1ebbe91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480749/normal_5fec2a1f183d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471514/normal_600054cd8eee6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460944/normal_60192ef551260.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472495/normal_5fef71084e988.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366336/normal_5ffe95884b986.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369900/normal_6002bd859f75f.pdfIn PDF document text
    • https://cdn.sqhk.co/kasuvapexal/zhjijJb/chad_wild_clay_vy_qwaint_newest_videos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407747/normal_5fe7849e0c671.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419198/normal_5fe82c7abc4dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381541/normal_5fd31d69266ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444638/normal_602168a1aa13f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421336/normal_60037ca4d793c.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/defipedibe/constitutional_guided_walking_tour_philadelphia.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/nolavuzerutepewotaj.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/ezekiel_sprouted_bread_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/allok_video_joiner_free_full_version.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_off0000c32f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC32F 5796 bytes
SHA-256: e8f1bde387a8727233845592f03a3ca1bf71c3eabb27a7b147b3263997b3aefa
font_01_sfnt_off0000d6cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6CB 10420 bytes
SHA-256: dabe0f52d0ae50d1c2ca5c02f2c886a6afe593351a1f738c997c8c8379f63a0b