Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f8551c8dc2405f…

MALICIOUS

PDF

68.4 KB Created: 2021-02-20 18:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6876b791fe84c8f83b0b5296eaa8119b SHA-1: 6a55aa491802f4e9579565811031445f423f7e65 SHA-256: 52f8551c8dc2405f6144f609c6657d1f9d2621ee82ef83b6ca892885dcfa5a2e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=ticketmaster+houston+rodeo+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448323/normal_5fdb09558f7bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366389/normal_5ffb5df41f11c.pdfIn PDF document text
    • http://1pokypki.website/37709233814uu8e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394077/normal_60156b715f908.pdfIn PDF document text
    • http://mebel-albero.ru/angular_form_email_validation_not_workingxy2qy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447888/normal_6001e1e67d420.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404987/normal_5ff9339a22b5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389606/normal_600311259900d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456984/normal_5fccd922c425d.pdfIn PDF document text
    • http://mir23.xyz/calendrier_2019_imprimerjyweq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403822/normal_602f841b54485.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448332/normal_5ffd04b68e30e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492253/normal_5fe3fcfc5a7a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485434/normal_5fdc31e91bda0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387408/normal_6023e6853f452.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/fupanabivote/metformin_hydrochloride_tablets_ip_500mg_side_effects.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/arya_ek_deewana_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/31479265445.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/remote_desktop_support_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/castlevania_grimoire_of_souls_android_republic.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/5938711718.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_off0000ceba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEBA 5436 bytes
SHA-256: 403d9bb0ec18d3c59b11fbd843f8f919b99f07afec7cd8880a9415289f97f629
font_01_sfnt_off0000e107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE107 10384 bytes
SHA-256: d354eb87743b646cd12fd58b8141ed6a206ab7be2fc852b1582d2990872d2476

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