Malicious PDF — malware analysis report

Static analysis result for SHA-256 65632f6bd879da27…

MALICIOUS

PDF

70.0 KB Created: 2021-02-23 00:08:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6cf12243c943fd96b3397b2ab2e23b1a SHA-1: 8b82f4855c8c0c391b31419cc904ef4234e98053 SHA-256: 65632f6bd879da276a99498436ec63b1cc6621e3dc284e1ab31b7caafcf6f9bb
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/wix?keyword=american+standard+dual+flush+toilet+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455681/normal_5fcf7eb9bb49b.pdfIn PDF document text
    • https://gesofomudejow.weebly.com/uploads/1/3/4/3/134344239/pigosoxijare_dexunu.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/nhiDjc6/98227212330.pdfIn PDF document text
    • http://fabimepela.22web.org/london_met_police_report_a_crime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421329/normal_60243b93d0e70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_600ef7541d3ca.pdfIn PDF document text
    • https://vefutafefu.weebly.com/uploads/1/3/4/8/134882527/fujotulo-lovizuxojitaju.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/hcN3rsf/54775951576.pdfIn PDF document text
    • https://botamelojobowi.weebly.com/uploads/1/3/5/3/135344227/sigezukoparozuxu.pdfIn PDF document text
    • https://cdn.sqhk.co/nitaroxujedi/7Phayml/lilibifujumuba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492272/normal_5fd0638a8e6cc.pdfIn PDF document text
    • https://cdn.sqhk.co/kerosumumato/hN8jeje/neighborhood_walmart_moss_bluff_pharmacy.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/wejuvono/7826394208.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/38860271337.pdfIn PDF document text
    • http://nibudikugi.epizy.com/shazam_app_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/simanewokedufopabe.pdfIn PDF document text
    • http://wagupamodesugub.rf.gd/sprint_premium_caller_id_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/answer_sklep_z_ubraniami.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/cheng_prusoff_formel.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_off0000d686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD686 5248 bytes
SHA-256: 1218794207b61c48cf45e250329afa863a0f918d6213ae0ee2ab6ae6ffc5e459
font_01_sfnt_off0000e82e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82E 10032 bytes
SHA-256: 5da7ef863419e1d142c1c9988c1069eb730bb4a0d406463b2f2525fa4a3b9c2a

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