Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e757abbe598ca04…

MALICIOUS

PDF

67.7 KB Created: 2021-02-16 03:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 852b98db233e97efac8047b8b337b5fd SHA-1: 23e56554927223a5cc475bd5f6681f7e0f827bbb SHA-256: 7e757abbe598ca04245742768257347317ce9db5f81b646a9489d652bc9a32e3
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://jottigo.ru/wix?keyword=geometry+proofs+worksheets+with+answers PDF link annotation
    • https://cdn.sqhk.co/dufukeraj/ajjjisl/dr._driving_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/linigurep/aU2zejb/xatetenojewox.pdfIn PDF document text
    • https://cdn.sqhk.co/gopuxipo/jgWjeuE/92842647217.pdfIn PDF document text
    • https://cdn.sqhk.co/jumupebuvi/idihdu8/5e_companion_app_files.pdfIn PDF document text
    • https://cdn.sqhk.co/zuronenom/jhahhig/cat_heat_pad.pdfIn PDF document text
    • https://cdn.sqhk.co/pininipata/5if9id9/drum_studio_rental_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/zakolemafemo/qSjihcB/63107914860.pdfIn PDF document text
    • https://cdn.sqhk.co/nitagalut/dhaDjh2/top_samsung_galaxy_new_ringtone_2019_download.pdfIn PDF document text
    • https://lolozodosut.weebly.com/uploads/1/3/1/6/131606575/zowizezatimutig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tedowafomaru/2330766580.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/farapumiwevuwuko.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/gitanjali_bengali_font_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/double_bed_sheet_sizes.pdfIn PDF document text
    • http://xuletesowugi.epizy.com/kuxawutusazalir.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF7D 5188 bytes
SHA-256: b4ae385a770284219237f4dca18b2c1989e7f4c09850867df16c7d62e302904a
font_01_sfnt_off0000d115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD115 10132 bytes
SHA-256: 6962cff19cd15349a2e7d65a407165866f9d0529faca454f9884173de2d8baa2
font_02_sfnt_off0000f3c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2