Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f5a7ac629b6e078…

MALICIOUS

PDF

71.9 KB Created: 2021-03-02 13:17:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6ceda9a36c0a22e80d35bf0fbd27db7c SHA-1: af0f547496d40180cc5d9ee3762b51f3e133ce67 SHA-256: 1f5a7ac629b6e078c0efb35d6b9818fa647c6ab96f0129b5dd0d49a852f4006c
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/award?keyword=albert+camus+le+mythe+de+sisyphe+citation PDF link annotation
    • http://alisaborodaenko.design/koviridf1o.pdfIn PDF document text
    • http://kvrovk.xyz/tidimofinefidolukugobelf2b6r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472495/normal_5fcdfb54abb50.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/arcelik_washing_machine_error_codes.pdfIn PDF document text
    • http://desajegurake.scienceontheweb.net/how_to_beat_the_labyrinth_botw.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/xufaxoferugod/fifuwetuguxir.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/netacad_chapter_8_exam_answers_2018.pdfIn PDF document text
    • http://pigutun.myartsonline.com/does_honey_work_for_walmart.pdfIn PDF document text
    • http://dezezefisimel.rf.gd/chidinma_kedike_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/72923645405.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/70850018702.pdfIn PDF document text
    • http://zulexesovo.epizy.com/dapofi.pdfIn PDF document text
    • http://zitulogakapede.myartsonline.com/99629462182.pdfIn PDF document text
    • http://kilarosine.atwebpages.com/light_relief_instructions.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_off0000d97d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97D 5544 bytes
SHA-256: fa87433e518fb51c15e3e6a527ed91daf95dd58aa85f1b5f333106fafe63c2f8
font_01_sfnt_off0000ec2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2F 11444 bytes
SHA-256: 76ae382009a4e846e260a31d5b0fec7a60b0967f4e64507afcd44759e9bc944b