Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f8c16f75c679b51…

MALICIOUS

PDF

77.2 KB Created: 2021-02-13 02:45:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f19afb974a38c682e14a85e3dea11978 SHA-1: 000faa5e44f264223bc0dbad3cbd49358ae7e606 SHA-256: 7f8c16f75c679b514b389c2ec9fe1f7d57f9986a2662155e543fcbd933310e8d
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://baarspo.ru/wix?keyword=estuaries+biome+abiotic+factors PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419451/normal_6011bd82bdf87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444357/normal_5fef47f0723d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422148/normal_6022baa21c244.pdfIn PDF document text
    • https://cdn.sqhk.co/nupozifulija/jcjjcje/76000199046.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491437/normal_5fee40cb43572.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/jcVfiih/sawofiroxi.pdfIn PDF document text
    • https://cdn.sqhk.co/xoberuweri/3vha5hf/serena_safari_caller_tune.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367940/normal_5fef3a282287e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451374/normal_60202745880e8.pdfIn PDF document text
    • https://cdn.sqhk.co/dikozogub/jZhcegf/zipizakipop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463543/normal_6005c40bd3de6.pdfIn PDF document text
    • https://cdn.sqhk.co/vomisape/exFjff2/vanireronarusopemijejo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385011/normal_5ff59e6b0f926.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/sazomo/abhimaan_bengali_movie_300mb.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/17052486532.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/fipivugaritobalefe.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/78269469954.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/aashiqui_2_song_masstamilan.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_off0000f3a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A7 5092 bytes
SHA-256: d0a2416d3eb6f2bcd795c6412fea5a222ccb31e8349a055b7d504c8863dfff14
font_01_sfnt_off000104e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E8 10348 bytes
SHA-256: a91e8f893103cc41c2915a66559eaeecbf43ed608386d359b8501902f4397b7a