Malicious PDF — malware analysis report

Static analysis result for SHA-256 515e9064275bf234…

MALICIOUS

PDF

73.0 KB Created: 2021-03-03 00:17:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5b0043d4f1bd9da115506840907cb50d SHA-1: 880cf36b26cb1dc89bd460f1e20f228763db8291 SHA-256: 515e9064275bf234f96c7eac52f371eb9dc407f76d6d5dff805d321d72601997
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/wix?keyword=csr2+hacked+apk+obb In PDF document text
    • http://dimax.website/c_est_fini_la_comedie_pianorj273.pdfIn PDF document text
    • https://cdn.sqhk.co/sujoxeti/PBifjcG/best_kingdom_building_games_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvevalor/1Whjmhg/covid_19_pandemic_end_astrology.pdfIn PDF document text
    • http://copyrightsupportforlnstagram.com/incarnate_construct_3._5_templateobqfx.pdfIn PDF document text
    • http://naykaryadom.fun/83968257233c2whl.pdfIn PDF document text
    • https://cdn.sqhk.co/nitumatemi/bsrQsjj/25249617759.pdfIn PDF document text
    • https://cdn.sqhk.co/butuxolevu/jEQ8W4e/marvel_realm_of_champions.pdfIn PDF document text
    • http://copyright-helps-team.com/vector_mechanics_for_engineers_dynamj95q9.pdfIn PDF document text
    • https://cdn.sqhk.co/porekige/AyhhxRI/kiwi_browser_fast_quiet_for_pc.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/luramamelolem/glamour_brush_font.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/70506942806.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/debitel_kndigung_vorlage.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/31789744819.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/sunuxipokifogefazel.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/bemizixegadomipodizijal.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/kageneniluwoxejakifu.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/rentas_perpetuas_ejercicios_resueltos.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/35128817020.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_off0000e157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE157 5368 bytes
SHA-256: f84851dd05d8913ff09f3809e517c4567c20be57e852b9ebd0328f3a1b529c85
font_01_sfnt_off0000f383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF383 10552 bytes
SHA-256: 43bc85e313dbabfb41688c06143d04bd9491e947416a5952561eb47ca3c1afe1

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