Malicious PDF — malware analysis report

Static analysis result for SHA-256 7817a9158dec3901…

MALICIOUS

PDF

68.9 KB Created: 2021-02-20 10:30:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 483ac62d0ae91bd656a5e577b2df0d27 SHA-1: 798df12b3e65442831ea0d5cb3cdc5422ddb4ab2 SHA-256: 7817a9158dec3901b6b696b619e2a5fac5bbf24cd93098f730ee14736d538ed1
136 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
  • 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://seumenha.ru/wix?keyword=critical+ops+apk+download+pc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450353/normal_5ff9a9431e14d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408464/normal_5ffc6dcc2aaf9.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/e6hjjbM/puxenowatimiwedade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409403/normal_60146e6aeedee.pdfIn PDF document text
    • https://cdn.sqhk.co/rorefevobo/iREjglW/leteragije.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403954/normal_60119bfa13159.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472768/normal_5fc95c44536b3.pdfIn PDF document text
    • https://cdn.sqhk.co/telivagawu/iTAhigf/hockey_prediction_app.pdfIn PDF document text
    • http://websporizlehd.com/53253238784oiggq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456369/normal_5fdff4809f259.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/negonanopix/kumbakonam_vethala_gana_achu_song_mp4.pdfIn PDF document text
    • http://bubezowi.epizy.com/vodilomufigejora.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/forklift_truck_theory_test_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/adobe_photoshop_pc_software_filehippo.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/10268143347.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_off0000d36e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36E 5128 bytes
SHA-256: b845840de90a5496977f3b783b646fa4bfdf3c7dae5457515370c2c8c2e1ffe4
font_01_sfnt_off0000e4f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F9 9924 bytes
SHA-256: 0000f5c1e466ec6762cf1c90107d6d17a20c50897e3d8e2f9f81abc56ef20c0e