Malicious PDF — malware analysis report

Static analysis result for SHA-256 f38c0ad3918d9911…

MALICIOUS

PDF

92.8 KB Created: 2021-02-28 23:51:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8f4349d8e4019908bda6e3bc42069da0 SHA-1: 5a7c4cebed0e0e80780373ff9a3d93b494bb5d39 SHA-256: f38c0ad3918d991166cf829d6e267502a711f50ce166e5bc6659cb18fb104f23
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/award?keyword=hebrew+new+testament+transliteration PDF link annotation
    • http://dimozakebaba.scienceontheweb.net/pride_and_prejudice_movie_online_subtitrat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476429/normal_5ff6cf0a94215.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464083/normal_5ff0d48113630.pdfIn PDF document text
    • http://taxelevizat.22web.org/supuzaxok.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/uijicgj/16068305941.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443819/normal_5fd06d479d3c3.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/Ogghggg/2558166111.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/jcmGIgj/dezexuletedopipin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459165/normal_600d2d334f5cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391008/normal_5fda7a713d59a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rosajeku.myartsonline.com/why_has_my_chest_freezer_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/komodisove.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/zulifiretogakofuzev.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/formal_dresses_australia_sale.pdfIn PDF document text
    • http://dakafatuvuguviz.atwebpages.com/mapavukivepomezek.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/93731207530.pdfIn PDF document text
    • http://nejexapef.rf.gd/amelia_bedelia_4_mayor.pdfIn PDF document text
    • http://bovamiwojilonem.epizy.com/bsc_marksheet.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_off0001270f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1270F 5024 bytes
SHA-256: a5030a167ab9f95f69031ad97e56f4331d58621dcb22791b34cf299a136297a0
font_01_sfnt_off00013819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13819 14676 bytes
SHA-256: 690987b5d1303726ab8d48024c5b7cfa4b052eb6b331be1268d8a83338b3cce3