Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fc7b6ca271b7a03…

MALICIOUS

PDF

72.7 KB Created: 2021-02-13 03:39:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c6219fb9ff25928575959cfe0ea2c72b SHA-1: dec845506047aff4491ddf144944112c13bf32a6 SHA-256: 1fc7b6ca271b7a031113db231d2a2e46422793585907fac78414dbaf1ed28504
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/123?utm_term=watauga+county+nc+register+of+deeds PDF link annotation
    • http://lotto-investclub.com/masked_singer_monster_performance_episode_9d3dwc.pdfIn PDF document text
    • http://fujubipe.22web.org/90145123569.pdfIn PDF document text
    • http://mixed-rootwork.com/kaplan_schweser_cfa_level_1_20198v19v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454167/normal_5fe8bb7fd989c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495040/normal_5fdee8f4281f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zowuxepalaget.epizy.com/5693114403.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/52978833552.pdfIn PDF document text
    • http://dozudaz.epizy.com/tutilikatoral.pdfIn PDF document text
    • http://wuzatefiroko.epizy.com/bleach_vs_naruto_free.pdfIn PDF document text
    • http://fokozagizek.rf.gd/lumufijikalekur.pdfIn PDF document text
    • http://keguwaburafokul.epizy.com/detective_games_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/canon_in_d_violin_sheet_music_solo.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/botejorujosilafamu.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/using_commas_worksheets_ks3.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/sivurudejajax.pdfIn PDF document text
    • http://xajalad.epizy.com/83015870590.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/repezovuv.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/tijutumagedosijazovika.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_off0000df9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9E 5272 bytes
SHA-256: 782f01afe28cea429de3a7d480a6628058093d8427b262890e1c1ef61dbcb826
font_01_sfnt_off0000f1b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B3 10476 bytes
SHA-256: bf1f8498f5d38b8a7a24c17e1af0620a44f83fdd4eba240327ee73f623d80818