Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa08174a8138e1ce…

MALICIOUS

PDF

67.8 KB Created: 2021-03-02 08:36:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 43170c2bbb5b0531a7de91beec6de76d SHA-1: 1e49a6018257cba95a9d31bb2ef71346ac3a46c8 SHA-256: aa08174a8138e1ce509a86ede9b3159e1a8009d00a3b979f2568a3cf23180d31
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://midufefew.ru/aws?utm_term=are+fruit+pastilles+gluten+free PDF link annotation
    • http://goossyy.online/boss_gt_100_manual_portuguesxlzss.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476133/normal_5fe0ac0928a44.pdfIn PDF document text
    • http://kanshoper.site/macbeth_act_2_multiple_choice_quiz_answersclmvo.pdfIn PDF document text
    • http://nijaxubazaziw.mypressonline.com/sixumuvanobikovuza.pdfIn PDF document text
    • http://tehnikator.ru/akbar_mughal_empire_informationpyfm0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424632/normal_602b67fd7366b.pdfIn PDF document text
    • http://vezerfa.xyz/paradox_key_genckx4o.pdfIn PDF document text
    • http://proba7.xyz/97842325022p2d1n.pdfIn PDF document text
    • http://webcam-model.online/85704657074hqaht.pdfIn PDF document text
    • http://vowitufafuzebil.scienceontheweb.net/zarupilebopuwid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503874/normal_5fe5738276580.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/pobuzakivararetid.pdfIn PDF document text
    • http://glawerry.online/bugedetinobusefalexukwcsv.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/towakog/windows_10_activator_kmspico_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/lord_of_the_rings_font_free_mac.pdfIn PDF document text
    • http://vebusatoro.atwebpages.com/what_animals_need_to_survive_video.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/18208922869.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/electrophilic_catalysis.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_off0000ce41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE41 5056 bytes
SHA-256: 2c5ac75babde75e170634e388af89cb999b0d14d4d674bb909363e776704f9d0
font_01_sfnt_off0000df87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF87 10160 bytes
SHA-256: 1951874e5372d9e9d937060fdc99207a14c953cee1c7d49f7477e4aa7656134b