Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d7285d3338d00fd…

MALICIOUS

PDF

75.0 KB Created: 2021-02-25 09:11:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ee937e1cf0ed9fbde765b7d4c16806b0 SHA-1: a68161532211cfc573bafb66653a9584ee650382 SHA-256: 3d7285d3338d00fd041d7f4be5b144c05c56ff08a26e6fb65d2951edc97b6bcd
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://jottigo.ru/wix?keyword=becoming+nicole+pdf PDF link annotation
    • http://digosige.mywebcommunity.org/windows_7_startup_batch_file_not_running.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477369/normal_601fa4a93258e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393511/normal_602756c11f246.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/gBjhdje/66065967149.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/how_to_make_a_vrchat_avatar_from_scratch_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/dumotometapo/jbAggdg/tubal_ligation_cost_in_texas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444644/normal_5fd0f11d09042.pdfIn PDF document text
    • http://organic100.fun/ch_mat_cutterimsv1.pdfIn PDF document text
    • http://luxasireku.sportsontheweb.net/who_manufactures_toro_snow_blowers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454162/normal_5fed17c8de96b.pdfIn PDF document text
    • http://sellforce.ru/37051918680nkczi.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/satudifin/sonafekofapaxubopabe.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/denipitoxebeg.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/ich_gcp_guidelines_investigator_s_brochure.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/major_depressive_disorder_guidelines_canada.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_off0000eb0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0F 5040 bytes
SHA-256: 884fc22c66a55ddb373c84433caf5fa800cd322b094f31aebe91f14dc09ad6c7
font_01_sfnt_off0000fc30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC30 10392 bytes
SHA-256: 9ea6fd6c5159d05e8c642c71aa244e9182862b732a0b3e7e58f61fb61f043ce8