Malicious PDF — malware analysis report

Static analysis result for SHA-256 3beeae313a5da5af…

MALICIOUS

PDF

68.2 KB Created: 2021-02-22 08:26:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: df57247274eb457e9d3a9f289f22ecf4 SHA-1: 0f2f16aa153a8344ab3a56ac8dbdf1d9aaa15180 SHA-256: 3beeae313a5da5af63b895096f20e19b39d6ac8df04b2f98da8c9b81c9fa4060
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=girlz+ink+store PDF link annotation
    • https://cdn.sqhk.co/samofetob/9NhhOZM/96870743663.pdfIn PDF document text
    • https://cdn.sqhk.co/gidetixi/MS6heiq/zarapajojajimif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476756/normal_5fd9573e7219c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369916/normal_6031c95ff1067.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461511/normal_5fd8cc470fa7c.pdfIn PDF document text
    • https://bizitaninajoki.weebly.com/uploads/1/3/5/3/135316521/gejunizorone.pdfIn PDF document text
    • https://cdn.sqhk.co/moxibusas/jgegi8c/hp_wifi_drivers_download_for_windows_8.pdfIn PDF document text
    • https://jerexibim.weebly.com/uploads/1/3/4/6/134654770/1a1099a5e81.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/dibWLgj/tawadugifebajitubetabero.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409113/normal_5fec16d40115b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484143/normal_603338e6c5fc3.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/igigjAT/zuzedexamokiradikekeba.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/babuxufarizuxur/what_is_centripetal_force_formula.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/jigixirowejibi.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_off0000cf7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF7F 4612 bytes
SHA-256: 31644485b1e27d0934116fb289f06df61880661b2e29ec83ad6b40793af301d8
font_01_sfnt_off0000df4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4B 10748 bytes
SHA-256: 5803925435976e1011cd1ede46887d28593632728b19eab077ef6a29ac20eee4