Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce4acfad281b5593…

MALICIOUS

PDF

66.4 KB Created: 2021-02-19 10:47:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 36df4bf7ad6b1d1f74ede8f78f0c4175 SHA-1: e1c202d9f4d879ba41b5efeacc5d30454c619920 SHA-256: ce4acfad281b55939a4038a456f94cebef4462a9974492e5640aee2412db02f8
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://bologen.ru/wix?keyword=a+child+called+it+pdf+download PDF link annotation
    • https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/40a10b62c934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382621/normal_6011371a1c4e1.pdfIn PDF document text
    • https://buvijolijesikuv.weebly.com/uploads/1/3/4/6/134602818/2674783.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472788/normal_6001d4acabfa0.pdfIn PDF document text
    • https://mefevujeloz.weebly.com/uploads/1/3/4/3/134317202/4237414.pdfIn PDF document text
    • https://fisikovomit.weebly.com/uploads/1/3/4/6/134652659/fonejopisijon.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/betefowubevat/dosekulo.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/warsaw_pact_treaty.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/powerpoint_templates_free_2018_for_school.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/gugagajonanov.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/new_moon_jan_2021_pst.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/latest_bollywood_1080p_hd_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/24054561272.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/xofepefajuduzu.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/alcatel_lucent_phone_4029_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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8DC 5052 bytes
SHA-256: cc255f70eae0ed2fd1b2a404e555ed09c0136920412483c868ff3ddf4f547409
font_01_sfnt_off0000da1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1F 10128 bytes
SHA-256: 8ced3fc51f2ed2b705491531d9c490cc7aa9ae36bab7d843082c2d6e842c0fb8

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