Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e481616d8aa26d3…

MALICIOUS

PDF

74.2 KB Created: 2021-03-08 02:12:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fe361a70f82cb46e2fa0d7d70ed18281 SHA-1: 222c26fc68ae38d416f50fa347b622124815d4ec SHA-256: 1e481616d8aa26d3c82433be98ce20979cd928a72c3c2b04cc49cf92e50c3887
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://gimoguvi.ru/wix?keyword=5.3+study+guide+answers PDF link annotation
    • https://cdn.sqhk.co/pigajifaw/gdhjjdG/ryobi_pressure_washer_1700_extension_wand.pdfIn PDF document text
    • https://cdn.sqhk.co/kogoruzojif/gdXhijU/11713794675.pdfIn PDF document text
    • https://cdn.sqhk.co/muvetowiripa/SjgGZgi/19635033902.pdfIn PDF document text
    • https://cdn.sqhk.co/devisojop/PIXErij/funky_karts_steam.pdfIn PDF document text
    • https://cdn.sqhk.co/kedilexele/TZJncGo/five_nights_at_freddy_s_2_scratch_demo.pdfIn PDF document text
    • https://cdn.sqhk.co/gotulurowav/he2eNjb/65642949773.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410214/normal_60098b99359a0.pdfIn PDF document text
    • https://cdn.sqhk.co/xaduwudixum/h6uTWfV/mupokavipez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476133/normal_5fd928e40e9a2.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/megulu/jupagivuti.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/21455060449.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/36777952953.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/37363953978.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/fuel_economy_guide_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/16681565277.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/giregoriwagaxikizivizewu.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/filezilla_mac_10._8._5.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/huawei_disable_magazine_unlock.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_off0000e587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE587 5380 bytes
SHA-256: c1e13ca610376e5dd107a0c01ab3478d4685165f19b2bc37b8a4d0d69cdf8f24
font_01_sfnt_off0000f7fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FB 10624 bytes
SHA-256: 23d230d1ec4c7680eccd43ebc8e19ee18339b3f38213843a3750fdfe786386e9