Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a7244dc1c5179ff…

MALICIOUS

PDF

65.7 KB Created: 2020-12-15 15:19:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 08eab19a528bf68e0a69da493713e9c6 SHA-1: 669e134b25c6ae2481ccb58eccf9289b9ce068ef SHA-256: 4a7244dc1c5179ffc9d3f6709923989996be7b1a19ede52e2d93c74abd92e085
314 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://tukuboxux.weebly.com/uploads/1/3/4/5/134510407/770093.pdf.
  • 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.
  • 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://traffine.ru/wb?keyword=plenty%20of%20fish%20app In PDF document text
    • https://tukuboxux.weebly.com/uploads/1/3/4/5/134510407/770093.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374545/normal_5f8df208c4041.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458829/normal_5fa2eef82ad7d.pdfIn PDF document text
    • https://bevowodawalejap.weebly.com/uploads/1/3/4/3/134363876/xixut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc65358085bf90c0e222242/t/5fcc3dcf9aa2de0c6486746c/1607220687409/rabuvukukin.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/24119715583.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/skyrim_alchemy_power_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/basara_2_iso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6ef3c97-8b71-4dd1-80b5-bb69e8898668/modagavilud.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/vusanigixedibuwuwatewuzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e995398e-e6bf-4ff7-a003-fe56b6f6275d/can_ducks_eat_dried_mealworms.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/blackberry_desktop_software_update.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe2ec018e72e5fdba14c1a/1606299329673/wilobaliravuw.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/zadujobe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ecedbf71053ccb1052a5/t/5fc319173c02f22b9d72f917/1606621464251/ravodoxukewuw.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_off0000c65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC65B 4996 bytes
SHA-256: 4b43ea1fd14dd916830c598e7515e84d176d915f52d0b8c0ab69e82c5243b7c0
font_01_sfnt_off0000d766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD766 10184 bytes
SHA-256: 6a2ac35efb6a88199456e92f8818ec296bc0e80e12730d3e0e9d1cd25c8bac4a

Open this report in the interactive analyzer, or submit your own file for analysis.