Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f52766cbe03d2b9…

MALICIOUS

PDF

76.6 KB Created: 2021-02-01 02:17:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 30555d910f4e31b22df6fc53cd05ce16 SHA-1: 6c9306bef6948bf7fc553c2627a595c780bafe0b SHA-256: 1f52766cbe03d2b933e84875fe77c97767a0095935b29e9cd85fa3f2f9c52205
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/aws?utm_term=article+rewriter+software+crack PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4477167/normal_5ff98931a5b0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379229/normal_5fd1443a03c79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467912/normal_600a591621729.pdfIn PDF document text
    • https://cdn.sqhk.co/noxomosanena/gfgfhiB/mowifasomaka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420765/normal_6002445f51994.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368237/normal_5fed75c9d65c9.pdfIn PDF document text
    • http://pitushok.fun/591678183954nfxw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473902/normal_5fe7959db865d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459166/normal_60028f9298825.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469374/normal_601744333ee40.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/zonebon/the_very_hungry_caterpillar_coloring.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/bhutan_tourist_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/sezasugukofirele.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/zumabukexegunuworukinojus.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/south_movie_film_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/63727380597.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/86805283496.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/56424374442.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_off0000f049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF049 5020 bytes
SHA-256: 021f10138c5f3621cc3c17fd2e0a47de7dcbb540ba6f005feb292e698d2f69af
font_01_sfnt_off00010184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10184 10524 bytes
SHA-256: 8b89aea0695a33d380afed291cf7673ca7d5aa86ffb312764a20437eb55e1aad