Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8cd77e5d21a14bb…

MALICIOUS

PDF

73.1 KB Created: 2021-02-19 00:37:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8c7dc7995c98bb3f9e1f29a795786018 SHA-1: 455aa7fe78ec0a1289c6556fb0df48f66ac34f64 SHA-256: c8cd77e5d21a14bbe73adc647b68c67bc780b03e8d8d4b825110e6ae6b05085b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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=the+truth+spy+crack+apk+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454289/normal_5fec906cbf199.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461780/normal_601aac0081c58.pdfIn PDF document text
    • http://slimitalia.space/limupaxobibio9tek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461780/normal_601bc376a4851.pdfIn PDF document text
    • http://organize.shop/best_casino_games_for_androidzv9co.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375196/normal_5fe1fa54221c5.pdfIn PDF document text
    • http://8bitbeardsco.com/97547538296sq7h0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450260/normal_5fc5f7d5385c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485305/normal_5fded67425df6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387715/normal_5fe337f24cf86.pdfIn PDF document text
    • http://prodit.space/bosch_serie_2_varioperfect_washing_machine_manualf4x72.pdfIn PDF document text
    • http://verenica.net/likazugixitorrbk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482869/normal_5fca92b700e99.pdfIn PDF document text
    • http://baykamif.space/hide_and_seek_indoor_playground_bakersfieldrsa5a.pdfIn PDF document text
    • http://taygerr.com/tuff_torq_k46_partsug0uk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427313/normal_602099416a78c.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/ligole/birox.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/autoclave_moulding_process.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/11906952520.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/calligraphy_writing_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/handwriting_alphabet_letters_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/miledewolap.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/lugelovetugiborikagovinan.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_off0000e0e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E0 5368 bytes
SHA-256: 8c7cb6ebaaa82843afeb0a05b7ffb410e0578c8c4ffbc277e2148338357879cf
font_01_sfnt_off0000f332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF332 10648 bytes
SHA-256: da4258ad4c5da30d0a90f9d11bef369c04afebcec6832b8adce71df662792874

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