Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eaea416fd63c6d8…

MALICIOUS

PDF

67.7 KB Created: 2021-02-14 20:37:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dc27149c7802100c7d0453d9f8755548 SHA-1: ff8b66ad9ba4d6efd5d62bb901129b0f3936848b SHA-256: 4eaea416fd63c6d8fadc32756e4cfcd69bfa8610dfd9b3dce56046f04720cdcc
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://seumenha.ru/wb?keyword=adverbs%20of%20frequency%20exercises%20worksheet PDF link annotation
    • https://rifojiditesi.weebly.com/uploads/1/3/1/3/131379396/25217.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529893/normal_601b3e465e848.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/6ghdhew/true_surf_hacked_account.pdfIn PDF document text
    • https://rakevuxex.weebly.com/uploads/1/3/4/0/134040666/374189.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/iafbgfb/63399332853.pdfIn PDF document text
    • https://cdn.sqhk.co/videmixolute/2bTLjar/rimeni.pdfIn PDF document text
    • https://cdn.sqhk.co/gurudulep/dhdhiiA/xalugurusawir.pdfIn PDF document text
    • https://cdn.sqhk.co/kusonemap/XIibkjg/jetolevapuvekeradibiva.pdfIn PDF document text
    • https://cdn.sqhk.co/pejozujemu/cVgehc3/abba_greatest_hits_album.pdfIn PDF document text
    • https://cdn.sqhk.co/wujamufaw/ha7lidU/farmers_io_new_levels.pdfIn PDF document text
    • https://fozipapuratub.weebly.com/uploads/1/3/6/0/136088586/7930600.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/rotowan/xamarin_android_load_file_from_assets.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/lagu_autumn_leaves_bts.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/cisco_packet_tracer_7_32bit_free.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/brazil_amazon_river_information_in_marathi.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_off0000cbf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF7 5508 bytes
SHA-256: 8b634b356c3ebaa42c699b5c18964aaa695b271ab4d0777cc584525e67821a38
font_01_sfnt_off0000ded0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED0 10352 bytes
SHA-256: 662311adeb5ad1da213c20df3eac7693c3d8ef90dcb262b398bde4d129e9b0b4