Malicious PDF — malware analysis report

Static analysis result for SHA-256 afa92fe7f2d1f03e…

MALICIOUS

PDF

68.0 KB Created: 2021-02-07 08:51:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0282bd2b456e8b6fa616b4a01ff26070 SHA-1: 8d4c52361b56b906feae45cfce21a8610952ed5d SHA-256: afa92fe7f2d1f03ee1d9c3a2176fdeb55c68daa8596a32477548b5851b4e011f
194 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
  • 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://crophysi.ru/aws?utm_term=avery+5160+label+templates In PDF document text
    • http://boomerangoo.site/brigandine_grand_edition_patch_v8di3mk.pdfIn PDF document text
    • http://italdom.fun/anti_corruption_act_in_gujarati3dim1.pdfIn PDF document text
    • http://instgrmmverifiedbadge.com/sabubefekurivuguwijefemej2i9cy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374532/normal_5fd7d3ce766d5.pdfIn PDF document text
    • http://comforfemj.fun/loxosodobezevogakonalowe299lz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470016/normal_5feb9b701f6e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451929/normal_601b44d7814d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414869/normal_600ff29a5f0bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478664/normal_5fee6155209c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372983/normal_5ffb240393ee0.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/gotijejaj/vuwipelifixobam.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/lekudoputanujazokerot.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/bahubali_movie_hd_video_song_free.pdfIn PDF document text
    • http://zutibebasonuf.epizy.com/a_d_g_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/ankhiyon_ko_rehne_de_mp4.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_off0000cbb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB6 5728 bytes
SHA-256: 08de41ce95a5022f8c254e7364cc315f40bb45f2c7d0075cab0ff54faa215142
font_01_sfnt_off0000df36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF36 10616 bytes
SHA-256: ef2612e39cc182fb6cbb75bcaf04cead00114f4b6c8dd071478707116a2b35ba