Malicious PDF — malware analysis report

Static analysis result for SHA-256 78908176eb65d5a4…

MALICIOUS

PDF

72.5 KB Created: 2021-02-28 09:52:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4c539a50ae2ca273676f43f50cb95944 SHA-1: cc45149736a5e9be5601e1ce1d8953e642bd0869 SHA-256: 78908176eb65d5a48ebf7f62a2a6302497e04d29932c6835882b0e4fb64a2b7c
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://nipisod.ru/wix?keyword=how+to+get+free+riot+points+in+league+of+legends+2019 PDF link annotation
    • https://cdn.sqhk.co/fepefudasor/axXn4rX/onedrive_sign_in_error_0x8004deb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380674/normal_5fdf283e08bcf.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/UtR6Mhj/xuvalewenuwet.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/62909194097.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454809/normal_5ffb8da17ea1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419218/normal_5fd8c2287278b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443804/normal_60142d12b808d.pdfIn PDF document text
    • https://cdn.sqhk.co/fedugaxoloz/hXaNezT/pandemic_force_meaning_in_urdu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485826/normal_5fd897bebd120.pdfIn PDF document text
    • http://sugameloxufe.mywebcommunity.org/english_literature_online_courses_in_india.pdfIn PDF document text
    • http://pidawudimo.scienceontheweb.net/81325416895.pdfIn PDF document text
    • https://cdn.sqhk.co/pesamelez/8GiiZsM/fanuc_ot_cnc_program_manual.pdfIn PDF document text
    • http://gagimubu.mywebcommunity.org/tikefom.pdfIn PDF document text
    • https://cdn.sqhk.co/sodelaranu/icZyifE/dubufet.pdfIn PDF document text
    • https://cdn.sqhk.co/zipodumup/djdbWgg/13201590425.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/gjgdics/36569930920.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475208/normal_601a3b3522e74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451205/normal_60228d1faa42e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427498/normal_5ff1857846f9c.pdfIn PDF document text
    • https://cdn.sqhk.co/kinerufi/jg5NCjc/75031723316.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8B 5744 bytes
SHA-256: 03b478542d8b49a57fa778fe4fd9b8aa6367fcea3e9a1f988f25812a77c5282e
font_01_sfnt_off0000f049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF049 10644 bytes
SHA-256: 948b6cd167b22c5b2360c129829de48791a1ff3ffe457265caa02f15a7a9591d

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