Malicious PDF — malware analysis report

Static analysis result for SHA-256 0850364d316ef71d…

MALICIOUS

PDF

73.0 KB Created: 2021-03-04 03:32:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6889283b5b9fbdbfd8837fee3d310fbd SHA-1: 3dc946eefcc265ad20b9486d243ce13ddffcf7a7 SHA-256: 0850364d316ef71d908632c2bb67251825642c87c876ce6da6cf88ddf94c0219
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://zajinet.ru/aws?utm_term=actron+codes+p0700 PDF link annotation
    • http://jobs-ingenieur.best/29624643154h15na.pdfIn PDF document text
    • https://cdn.sqhk.co/simixejazir/jUZqjih/lucky_block_minecraft_pe_mod.pdfIn PDF document text
    • https://dawanuma.weebly.com/uploads/1/3/4/3/134305997/5129328.pdfIn PDF document text
    • http://fakaripeti.xyz/2020_football_schedule_south_carolinatxxiq.pdfIn PDF document text
    • http://bitcoins-profits.com/kufovutvms15.pdfIn PDF document text
    • https://lejumapufa.weebly.com/uploads/1/3/4/6/134688193/2380384.pdfIn PDF document text
    • https://xiwupegolowiba.weebly.com/uploads/1/3/1/6/131606046/c692a3949e85c.pdfIn PDF document text
    • https://befakudi.weebly.com/uploads/1/3/4/5/134595811/bosixi-roboginin-virizu-lisaponinuja.pdfIn PDF document text
    • https://jolewewovu.weebly.com/uploads/1/3/6/0/136087062/sajaf-notasamevarev-vuneni-zivuti.pdfIn PDF document text
    • http://superheatbelt.xyz/47524831128yohjn.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/loranoduzuja/sintering_dry_reforming_of_methane.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/emotional_regulation_worksheets_free.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/bloomberg_reporter_katia_porzecanski.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/suxejewokezurudi.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/recuperare_messaggi_eliminati_whatsapp_android.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_off0000e2a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A4 5036 bytes
SHA-256: 8cd6fc7cd9f6a888fe148023c3f32098bad99084d00da3309927e5c46fbdd3ff
font_01_sfnt_off0000f3e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E1 10396 bytes
SHA-256: 81964865370e35d99df8c53e1e42cc88030e20c5dac31d6a0059acd67a70aa1e