Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f35fd9729993aa7…

MALICIOUS

PDF

66.2 KB Created: 2021-02-18 00:52:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 444e8e8ffc6ba3af1777405fcf19d414 SHA-1: afb19dc64dd8c521ef17ecc6d394f7fb89dda272 SHA-256: 0f35fd9729993aa7e946cd08da42d1ed8d57fd9fd744469a09e4f7f413721c19
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://jottigo.ru/wix?keyword=las+mil+y+una+noches+libro+precio PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4457570/normal_5fcea4ab9ad24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376357/normal_5fe7aef7aeeb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462379/normal_5fd280246205c.pdfIn PDF document text
    • http://jufawet.iblogger.org/bppv_exercises_in_spanish.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473963/normal_5fe78f323d103.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404965/normal_600bc683aa396.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455914/normal_5feafff0169c1.pdfIn PDF document text
    • https://cdn.sqhk.co/mojerakikav/hgjaLhg/70237488389.pdfIn PDF document text
    • https://cdn.sqhk.co/weruvewo/GBjbiik/wuwisuxilibaxizi.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/HjaooQO/dialysis_technician_salary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369506/normal_5fd91437692ec.pdfIn PDF document text
    • http://zabogena.iblogger.org/implosion_mod_apk_latest_version.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420924/normal_600642e90c184.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390328/normal_5fef668269b6f.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/iajagh5/38658091425.pdfIn PDF document text
    • https://cdn.sqhk.co/lakuxezaj/RiimDOw/final_fantasy_xvi_wikipedia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463809/normal_5fec3fab49c86.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481173/normal_5fe36551d0b7d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kalilom.epizy.com/16833102285.pdfIn PDF document text
    • http://fevupepetifus.rf.gd/emiway_bantai_new_song_ming.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_off0000c467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC467 5356 bytes
SHA-256: c6fb6663289d929d2d161ddb949e9928f83dab02420e2fd2ec5483e35f37f086
font_01_sfnt_off0000d675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD675 10752 bytes
SHA-256: 9fada5af0ac02de560a9c179cdc9e1c7e2228143b50bc31a1cd53df88d8ebc5f

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