Malicious PDF — malware analysis report

Static analysis result for SHA-256 38ce5dfd216d9f59…

MALICIOUS

PDF

74.0 KB Created: 2021-01-25 23:29:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 873b47a9ea817b2bd67e0ba7b14795c8 SHA-1: f02b510f25a46e2e531efd56fc50800e8e4b7248 SHA-256: 38ce5dfd216d9f5959a2f9fa491e45e7e6522788b72db47ee453463e18aa0b30
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=playstation%20plus%20for%20free%20hack%20ps4 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4468836/normal_5fe5d3001220e.pdfIn PDF document text
    • http://losqutoq.online/free_bubbles_svg_files_for_silhouette_cameo_37bayz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483388/normal_5fc8954b7c365.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369900/normal_5fc59c1254681.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383807/normal_5ff763b729e79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369914/normal_5ff7d540eae4f.pdfIn PDF document text
    • http://espacecmb.xyz/gevirasgo02e.pdfIn PDF document text
    • http://soul-felt.com/stickman_weapon_master_hack9e0oe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419642/normal_60009118712b5.pdfIn PDF document text
    • http://trixy-matrix.space/dual_fuel_portable_generators_for_sale3vxbv.pdfIn PDF document text
    • http://copyrightsupporthelpcenter.com/99024665204xpdbn.pdfIn PDF document text
    • http://fabermanufacture.ru/kontra_k_songs_2020jeo6w.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/nafamaragisek/alif_se_song_hd_video.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/mageroxon.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/bepanah_pyaar_hai_song.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_off0000e4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E9 5356 bytes
SHA-256: 537c669db30fd494f06215e0d6e91760ca06257a5ccad6a4cb37446853294c71
font_01_sfnt_off0000f72b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72B 10568 bytes
SHA-256: d5987b1d3751e10bb8c315ceb34c0e6ade8e370493b9b0ac09b57b9799879a21