Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bdbc835da0da848…

MALICIOUS

PDF

72.3 KB Created: 2021-03-04 06:51:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 93691efee573cdbd81d2c41104414d48 SHA-1: 7e89e1bf9b7b21fa7510470da4a538e5526f56bc SHA-256: 7bdbc835da0da848fdb4b73b7c72b1cf736a88be0973e0e6d32301a77a3fb715
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://baarspo.ru/award?keyword=singer+touch+and+sew+600e+review PDF link annotation
    • http://zotikarida.medianewsonline.com/cooks_essential_pressure_cooker_recipe_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375209/normal_601d305ea275a.pdfIn PDF document text
    • https://cdn.sqhk.co/zenegiwowi/idhdWjh/narorufatorotelogejikijop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410695/normal_5fc7c2acb965e.pdfIn PDF document text
    • https://cdn.sqhk.co/surofowudula/dVgnc6i/72846691276.pdfIn PDF document text
    • http://sosuziba.mypressonline.com/what_is_an_ecological_tipping_point.pdfIn PDF document text
    • https://cdn.sqhk.co/jadosoxiko/jhdjfPy/59162697162.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401716/normal_6022e8c6e5dee.pdfIn PDF document text
    • http://nekuwagibajese.getenjoyment.net/how_are_prevailing_wage_fringe_benefits_calculated.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402478/normal_5fd6f69921727.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/pizivurapab/bernoulli_s_law_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/intellij_android_sdk_manager_not_working.pdfIn PDF document text
    • http://natidifober.epizy.com/nextbook_flexx_10_keyboard_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/jivomobipafuvisedujep.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/internalization_theory.pdfIn PDF document text
    • http://fazaburifug.myartsonline.com/14675619847.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_off0000deed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEED 5720 bytes
SHA-256: 55465356ac267511af79bdc84e354b6b9f33e777b266462589a51d54a8979f17
font_01_sfnt_off0000f276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF276 9936 bytes
SHA-256: 52c93dc1825c2f32396632bfa13610dda031392e136df9c5f1a8497a484531d0