Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ecb8887fda2eff…

MALICIOUS

PDF

73.2 KB Created: 2021-03-02 02:35:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f406a09fd94b1a14e360b2cecdde8752 SHA-1: 058ce178cf3434a62891481daecbb8b6753f8373 SHA-256: f2ecb8887fda2eff6d62d8a4ca6b37a8bf77b0f09f736628c8f38fc2981118b4
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://soxebez.ru/strik?utm_term=subordinating+conjunctions+list+aaawwubbis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454678/normal_6018688807a35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377115/normal_6037676f9426a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494668/normal_5fec57489ef88.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371523/normal_5fd06f45410ef.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/iiLejjl/sanofamivaxudedibobu.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/bgenhjK/82176848318.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449417/normal_603248e9eb3a4.pdfIn PDF document text
    • https://cdn.sqhk.co/pajelidul/hjgjbig/52796911765.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzozuni/tdkNheg/38312154705.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483839/normal_60390defcb853.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370528/normal_603872c37780b.pdfIn PDF document text
    • https://cdn.sqhk.co/xadeviro/8ggjbia/blazing_star_liatris_bulbs.pdfIn PDF document text
    • https://cdn.sqhk.co/fekawifen/jfd95N0/4710192717.pdfIn PDF document text
    • https://cdn.sqhk.co/mujowofapubi/geDFSig/29671897802.pdfIn PDF document text
    • https://cdn.sqhk.co/fafaviwi/U6ieOAM/gonalerufataxosifu.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/vezumobigodub/pressit_cd_label_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/south_carolina_2018_football_uniforms.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/chief_architect_reference_manual.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_off0000e093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE093 5520 bytes
SHA-256: ef52984a2e7b59246bde57a4855b80b75c4157a76999ba8d9fb63babf67a498f
font_01_sfnt_off0000f370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF370 10564 bytes
SHA-256: a129b80c65013b383e99a56af8d28a7435e0846d6602535f659d7736b58ce088