Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d14dadf5bcc4bf…

MALICIOUS

PDF

67.3 KB Created: 2021-01-22 05:23:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a7530bc81a5173c5af9547c82180f030 SHA-1: 8b321205a961b224a046676f7aa9f05599cc07a4 SHA-256: 88d14dadf5bcc4bf6a60a23dc204d33291ecf69ff7084a0072b0deb34e32f3f7
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://druttle.ru/123?utm_term=thinking+bout+you+ariana+grande+lyrics+deutsch PDF link annotation
    • https://site-1178549.mozfiles.com/files/1178549/download_stick_tennis_mod_apk.pdfIn PDF document text
    • https://konegodifoxud.weebly.com/uploads/1/3/1/3/131380175/46ae5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460045/normal_5fc641003f68c.pdfIn PDF document text
    • https://zutiwijutorezaz.weebly.com/uploads/1/3/4/3/134354078/4da7f1b68f836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486365/normal_5fdb61cfa55db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472793/normal_5fd09a4761664.pdfIn PDF document text
    • https://site-1180710.mozfiles.com/files/1180710/bunenodimo.pdfIn PDF document text
    • https://wadasazaba.weebly.com/uploads/1/3/3/9/133999184/7635736.pdfIn PDF document text
    • https://site-1175491.mozfiles.com/files/1175491/43195729535.pdfIn PDF document text
    • https://site-1166595.mozfiles.com/files/1166595/germination_worksheets_for_grade_1.pdfIn PDF document text
    • https://site-1168430.mozfiles.com/files/1168430/garden_minigame_cookie_clicker.pdfIn PDF document text
    • https://site-1176426.mozfiles.com/files/1176426/xawowefumagim.pdfIn PDF document text
    • https://sawifumoz.weebly.com/uploads/1/3/1/3/131380604/b7fbb5d091.pdfIn PDF document text
    • https://senorori.weebly.com/uploads/1/3/4/6/134641151/niponidolemidi.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/wolina/coding_guidelines_for_inpatient_rehabilitation.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/50957397288.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/61096211444.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/57591157330.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_off0000ca95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA95 5456 bytes
SHA-256: cf029ecb3cc25b5ee6ab5260a9f430779b9bf7be54c7ccdf1c64a631c856c30b
font_01_sfnt_off0000dd1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1F 10232 bytes
SHA-256: e47aff09a51327a492efded4c4132700978e386214da802dae7e6a801bf324de