Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff32d97c6feb3511…

MALICIOUS

PDF

70.0 KB Created: 2021-02-28 23:33:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: df3e6eaeffb5d6fe0dfcf3e7e8e1957b SHA-1: c75589eef5189c52b3069a077ca6b1647cf91699 SHA-256: ff32d97c6feb3511a9c242dd67e57b44659f8e21a534df1ad506e278828d4b21
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nipisod.ru/wix?keyword=necessity+of+compromise+def PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4491705/normal_5feb0f8d5ee9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495244/normal_5fc5ed8d7d2ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478951/normal_5ff2810076dd1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393349/normal_5ffa73eea2031.pdfIn PDF document text
    • https://cdn.sqhk.co/lajawawinu/fJiddK8/canadian_license_plate_game_printable.pdfIn PDF document text
    • https://cdn.sqhk.co/kejaxedusuk/4ib77ji/senssun_life_reviews.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/faluzotixupi/aghori_hd_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/2769786555.pdfIn PDF document text
    • http://rejefuwozumij.rf.gd/molecular_biology_worksheet_answer_key_page_8.pdfIn PDF document text
    • http://semiwexojexudu.epizy.com/ledoti.pdfIn PDF document text
    • http://sawubomom.epizy.com/answering_service_jobs_toronto.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/80746567263.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_off0000d715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD715 5132 bytes
SHA-256: a7e9d1b6c8f3d813dc98154548ad6874522538df8b05e024f62aaddac9fbd0ce
font_01_sfnt_off0000e889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE889 10260 bytes
SHA-256: c985f86a21d863ac5ed0fc192418780ca579026f685de34a7da0b1120ef4956f

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