Malicious PDF — malware analysis report

Static analysis result for SHA-256 08027fc3f0de5a65…

MALICIOUS

PDF

64.3 KB Created: 2021-02-10 05:23:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0618cec298c9abc6b37c13be03c494fc SHA-1: e86c5bca67862f7c947551f599ee1a7e30edbd08 SHA-256: 08027fc3f0de5a653245e9f582f7b0cb94d4783e1ab811d4187113f32079225d
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=free%20certificate%20background%20template%20word In PDF document text
    • https://cdn.sqhk.co/botikavanov/ijdOMPR/word_chums_cheat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405459/normal_5fe0ddcc53dd1.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/soDfjec/game_tap_legend_hero_fight_offline_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/vnrgf0X/pew_pew_pew_meme_it_s_a_22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366362/normal_60226e4b043b5.pdfIn PDF document text
    • https://cdn.sqhk.co/kisesawaropo/I1jiaq1/tizapivubixa.pdfIn PDF document text
    • https://cdn.sqhk.co/mebozesilo/POFJ8ih/songpop_2_online.pdfIn PDF document text
    • https://cdn.sqhk.co/fewibefanid/Hjjauqq/labyrinth_maze_definition.pdfIn PDF document text
    • http://daimontimur.org/38518790348osme4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458412/normal_5ff1cb87369f9.pdfIn PDF document text
    • http://trickyturkey.com/virtual_assistant_training_manualh5s0k.pdfIn PDF document text
    • http://stebsmeh.space/56812554596vrzf9.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/gofilafixu/bofebasokifux.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/55992968504.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/4174202328.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_off0000bec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC5 5548 bytes
SHA-256: d538227ac7cd5d819f056e77b7fc5ce8bc45a2a7ae02ffdec4c038d5f41e7d9d
font_01_sfnt_off0000d1a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A2 10196 bytes
SHA-256: b665e79e578529cf56df0901eefaf7ae2a592beac6ce6c29e215a559e5dc4ee3