Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e018efff70936d…

MALICIOUS

PDF

69.1 KB Created: 2021-02-12 00:47:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 48be53804d6b11ae525485b39cd310ed SHA-1: ee482ffe1cf4655ee45750361901308363d77195 SHA-256: d1e018efff70936dbf46b5b4b84e472f4afc203e82dbeccf99812ccae5787f75
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=x+com+ufo+defense+manual In PDF document text
    • https://static.s123-cdn-static.com/uploads/4447450/normal_5feb1a5fba071.pdfIn PDF document text
    • https://cdn.sqhk.co/milatepoz/cDogdJc/44652185112.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452373/normal_5ff24e3b40b74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487381/normal_60217e5a85a88.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464734/normal_60094f0ef2f59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367300/normal_5febdaebde15b.pdfIn PDF document text
    • https://cdn.sqhk.co/lebuwoxetale/fjgBB01/instachat_apk_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/nexokefad/SHOOMa3/jufinexexurifawimugone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426822/normal_5fe2ab5736189.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481402/normal_5fe62ffe891d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444374/normal_6015d87147bc1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jefazaxal/buku_paket_agama_islam_kelas_11.pdfIn PDF document text
    • http://subedawulowuwo.epizy.com/vovul.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/44021962766.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/diocletian_s_palace_self_guided_walking_tour.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/casula_public_school_uniform_shop.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/car_racing_games_apkpure.pdfIn PDF document text
    • http://kalujagemivinid.epizy.com/57230479444.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/binary_search_algorithm.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC75A 4804 bytes
SHA-256: 729a07332f93d938a9528d7bd14e1e45ee2e45d7961285049889b14333aeeab4
font_01_sfnt_off0000d78c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD78C 9812 bytes
SHA-256: d84e0532204a4f02b58c76d32be6a6d8093421d934a84c960c0f424c393573b8
font_02_sfnt_off0000f941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF941 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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