Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd890e6b681d9bb6…

MALICIOUS

PDF

66.4 KB Created: 2021-02-16 23:50:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3a8732d6466ae6a03b2852776e6da05b SHA-1: 8c169f4510281c7877a9406031c4da71cb2576a1 SHA-256: cd890e6b681d9bb6d5034ff3069e0a09fc738db6da5a1774a9cc0280f971f644
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://maypoin.ru/wix?keyword=alcatel+one+touch+pop+icon+manual+de+celular PDF link annotation
    • http://rotixumuzu.22web.org/76828854434.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404739/normal_5fe69647238f2.pdfIn PDF document text
    • http://cuzinfo.ru/the_trials_of_apollo_download_free8t33r.pdfIn PDF document text
    • http://makamar.tech/vebolekaxakowijepezuzagut8n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420240/normal_5fe0c85a250ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376120/normal_6012796ba23d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451210/normal_601f40cf086f7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nemebikox.epizy.com/7809687552.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/hilary_lodge_retirement_home_listening_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/cortana_windows_7_64_bit.pdfIn PDF document text
    • http://woxutonugosafer.epizy.com/gipoguparoxugotuz.pdfIn PDF document text
    • http://fofilelajisemap.rf.gd/how_to_repair_a_mitsubishi_air_conditioner.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/rrb_alp_result_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/simotowilagudezosi.pdfIn PDF document text
    • http://midowadijurufak.epizy.com/preparation_of_nylon_6_10_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/xotatejixoju.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/zegofojenudebetalazanikit.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_off0000c836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC836 5124 bytes
SHA-256: a4b0ab9df0004d7742edb27ba9f7c7adb3d55daf76ab9a372b061928a40587a9
font_01_sfnt_off0000d97b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97B 10456 bytes
SHA-256: 43064141828475e48d552a8872997317ca23a37c7717d79df83cfc1cbced5820