Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3810f2fe48ab6ee…

MALICIOUS

PDF

70.7 KB Created: 2021-02-13 03:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 38fc030b65c05e5987218d2efa6658e3 SHA-1: 09178d12a56fc2882e565bfd22a402b82a10be40 SHA-256: d3810f2fe48ab6eeacade9bd8814450e828008ee27b10f01caf8409bb6784308
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://seumenha.ru/wb?keyword=free%20printable%20spreadsheet%20for%20monthly%20bills.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://seumenha.ru/wb?keyword=free%20printable%20spreadsheet%20for%20monthly%20bills PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4473971/normal_5ff56d251f127.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452593/normal_5ff2adb386a78.pdfIn PDF document text
    • http://yachts-4-sale.com/multiplication._com_division_4_in_a_rowhzaxi.pdfIn PDF document text
    • http://webmastervlad.ru/18395115940js3oz.pdfIn PDF document text
    • http://zoo-taxi.site/bengali_full_movie_hd_khiladi2n7xk.pdfIn PDF document text
    • http://jilet1.club/supraventricular_tachycardia_guidelines_ahaze8e3.pdfIn PDF document text
    • http://arthromedshop.xyz/facebook_lite_update_version_2019914vh.pdfIn PDF document text
    • http://smartcreditcheck.info/905127590969fd0f.pdfIn PDF document text
    • http://agencymedia-ig.com/mp_board_10th_class_maths_book_solutl6031.pdfIn PDF document text
    • http://natbeach.space/neverwinter_dog_companionzmrlw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458132/normal_600a750032a6d.pdfIn PDF document text
    • http://haifaiv.ru/montblanc_automatic_watch_manual7sib7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dapuzuro.epizy.com/80878482333.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/94319709571.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/hollywood_movie_tamil_hd_isaimini.pdfIn PDF document text
    • http://takikixak.rf.gd/zunivure.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/68950868821.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/64054158594.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_off0000d69b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69B 5476 bytes
SHA-256: f95d77738bf6d73f0ca3abc82caa34af3185006879a190ba9fd786d50906a180
font_01_sfnt_off0000e911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE911 10760 bytes
SHA-256: 4701d4fd77ccaf122f975b2235d4e715870b888c1f0d2673103b86b4b5b15633