Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc5c204fcb42dbf…

MALICIOUS

PDF

69.8 KB Created: 2021-03-08 10:43:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1b0852be789d2c71334f0defff4b77c7 SHA-1: 00da01a37d1c1b2122f348535b77a0d689acb5fa SHA-256: 5bc5c204fcb42dbfedde5d440f5b95bb4258e08029feb6d9bb717f9740b1c61e
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://resalured.ru/wix?keyword=fsae+rules+2020+pdf PDF link annotation
    • http://samoe-samaya.ru/mewozapirunotijelavapuxmt9nh.pdfIn PDF document text
    • http://daating19.site/minecraft_stratum_2048x_free_downloa1uw39.pdfIn PDF document text
    • http://classicalnaturally.com/alcidion_group_limited_annual_reportkcgpm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477626/normal_5fd77e7b1983b.pdfIn PDF document text
    • http://waystep.site/337110553196zbub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462352/normal_5ff7ba0b71201.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366000/normal_5fcbf1efe38a6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e6c529cc-411f-4195-b5ea-7b5fd081490a.filesusr.com/ugd/b7ab08_f77b67b2d76b4566a882144d57791c15.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f2cbe15-ceda-4c0a-99b2-a37ccb0ddfd0/star_wars_knights_of_the_old_republic_2_revan_robes.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/blueskysea_mini_0906_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/15966543979.pdfIn PDF document text
    • https://1261df91-4e32-40b2-8b8a-4050d3c54cbb.filesusr.com/ugd/df69c1_ddf9fe0c50494441a83e9be6b3963b3e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0061320e-e6d8-49f6-836f-ee445d73ca31/tegixipesufogigazeju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62bd1cf4-c257-4384-91ab-9390cec5bf0f/delonghi_nespresso_descaling_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/repap.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/gogudabogataduno.pdfIn PDF document text
    • https://79d86aa2-23c4-4aa0-a0dc-c16ac59ae55d.filesusr.com/ugd/ecb701_8044b6120bfd41188ee73ce374811633.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tiduro/87304258857.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/light_and_shadow_worksheets_for_first_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/podulonababikumuxejekaf.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_off0000d61c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD61C 5264 bytes
SHA-256: 21437279dc6f8199f1c25dfa2b859e03a434e0a519bf03480612acd6838ea75a
font_01_sfnt_off0000e811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE811 10108 bytes
SHA-256: 1a59ead4433238dcefa9c3cf2ccec1e2cbc6c8eb6b71dcc84b39ca32a9953d39

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