Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ec7ac7357a68cc7…

MALICIOUS

PDF

70.7 KB Created: 2021-02-21 17:42:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7b9a684d8d3541816a74a8f699cb2a41 SHA-1: 4edb02919c981355a2a769bc4eb384b9ec3d6822 SHA-256: 5ec7ac7357a68cc7b10f9baeebbe4e372defdf520459db5b5c1dfbb4c566232e
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/wix?keyword=wot+tanks+for+tournaments In PDF document text
    • https://cdn.sqhk.co/jozazixefuf/gi4d1QW/73101807271.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368952/normal_5fddc32340c31.pdfIn PDF document text
    • https://cdn.sqhk.co/rixutixim/bD06m3z/environmental_service_projects_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/wememiguw/0U9haHA/99410787501.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/vipuxafol/6671715062.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/how_many_pages_are_in_harry_potter_book_6_us_edition.pdfIn PDF document text
    • http://felubumasosazi.epizy.com/51488875411.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/nawoxudutofajiwaput.pdfIn PDF document text
    • http://gatomav.epizy.com/89685963023.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/wiwumo.pdfIn PDF document text
    • http://nifopufu.epizy.com/75368122346.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/dialectical_behavior_therapy_techniques.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/wuxopukilozoroloninak.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/guild_wars_2_ranger_pvp_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/86349305311.pdfIn PDF document text
    • http://jiguluvosasibun.epizy.com/bugaboo_cameleon_3_performance_footmuff.pdfIn PDF document text
    • http://tulezij.rf.gd/word_family_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/12725254332.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_off0000d7c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C6 4960 bytes
SHA-256: 6553b8b6e26ad400305aee8c01dc1fcb73474a3048b5fd180da15e7069cbe7c5
font_01_sfnt_off0000e8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A1 10824 bytes
SHA-256: 2f363ec0911e5a01147d93820d15ecc5c4f5e835f65facc0b8f09fb33eff999d

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