Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dde6fcba807eb49…

MALICIOUS

PDF

74.5 KB Created: 2021-01-27 17:32:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8879bea9935caea5f78c4636781d33dd SHA-1: 62c8fb649bfb2753e2f60de6ee06dea821f0b442 SHA-256: 3dde6fcba807eb49db74ae8786860cf296b37c928fc0eaee0c81fd7c8880e38c
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/aws?utm_term=3+alif+lam+mim+free PDF link annotation
    • https://cdn.sqhk.co/loxowopiv/hojaagf/teppanyaki_near_me_fresno_ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392209/normal_5fdca6f129de8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421330/normal_600c81637cddb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478148/normal_5ffd7b36394a3.pdfIn PDF document text
    • https://cdn.sqhk.co/waximanodif/riaxrib/pasideliv.pdfIn PDF document text
    • http://mosasekoz.22web.org/56758321318.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404105/normal_5fe4cb447aad2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408583/normal_5ff71b11b36dd.pdfIn PDF document text
    • https://cdn.sqhk.co/nubowolimit/ijjgfgd/58489093812.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/wukevirenesu/cetusplay_apk_for_android_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/nawasu.pdfIn PDF document text
    • http://dololesorut.epizy.com/8334756869.pdfIn PDF document text
    • http://woxutonugosafer.epizy.com/87588475685.pdfIn PDF document text
    • http://nonavijewiw.epizy.com/86824259472.pdfIn PDF document text
    • http://fuzimobikuxuta.epizy.com/vunitofubetef.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_off0000e6c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C9 4804 bytes
SHA-256: 38b8b1af062b12e0d63f0d901b5c4916e9cf00cade4cf54412d98eb59df241f5
font_01_sfnt_off0000f70b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70B 11372 bytes
SHA-256: 62fd51ae7c1e24b2c291d0fb13ab16b2cd028243d2f9d193dc293f37998f6712