Malicious PDF — malware analysis report

Static analysis result for SHA-256 f252acc2c5488d83…

MALICIOUS

PDF

75.6 KB Created: 2021-03-01 17:44:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 01e5abdf71214972e2ebf0123c1ef127 SHA-1: 3caea0f394f3110dcd87a1a897c7b32681d139fc SHA-256: f252acc2c5488d83c6e6878c448530dc1d5a2bd2c609f7bc6096f2de04866c11
196 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
  • 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://soxebez.ru/award?keyword=how+to+get+netflix+on+sky+q+box PDF link annotation
    • https://busozovamifolak.weebly.com/uploads/1/3/4/2/134235369/donef.pdfIn PDF document text
    • https://cdn.sqhk.co/bodorosuzuta/cgfial8/delefapafivusupowabapujaj.pdfIn PDF document text
    • https://vewiwuxipax.weebly.com/uploads/1/3/2/6/132681682/wekobomusovomome.pdfIn PDF document text
    • http://springital.fun/algebra_1_word_problems_worksheet9nkwp.pdfIn PDF document text
    • https://jabukosiw.weebly.com/uploads/1/3/0/8/130874379/vijuf.pdfIn PDF document text
    • https://xaxarudo.weebly.com/uploads/1/3/0/7/130740130/sorekorotel_dubujepigi_pefed_bojevosaxiroxeg.pdfIn PDF document text
    • http://my-favshopd.online/fiwibivasofgq9b2.pdfIn PDF document text
    • https://jarosebat.weebly.com/uploads/1/3/4/6/134695718/8674406.pdfIn PDF document text
    • https://dukilukisa.weebly.com/uploads/1/3/1/0/131070258/3d66f86.pdfIn PDF document text
    • https://cdn.sqhk.co/naxudufejik/fukijkC/90717859917.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/dVJ9aie/free_slots_casino_game_777.pdfIn PDF document text
    • https://tiruzezisuwef.weebly.com/uploads/1/3/4/4/134499189/3a5fd9b.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/votawawo/81544595525.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/38022953119.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/inventory_disposal_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/carry_on_jatta_2_openload.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/barivodidolopitake.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/43324865540.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_off0000ecf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF9 5184 bytes
SHA-256: 9ef9333df552b923eeb9d715e25856e65ded89fb435ba92948bbef38ebbe56a1
font_01_sfnt_off0000fed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED8 10136 bytes
SHA-256: 37952cb3427919f15af677798419473f51f8a0017ed2567fbf0ab89491d92916

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