Malicious PDF — malware analysis report

Static analysis result for SHA-256 abcf81954211aab2…

MALICIOUS

PDF

70.9 KB Created: 2021-02-22 04:45:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4e151dc5aa92f08c16184ea35fa798f0 SHA-1: 7974ea089d4d57b045517705c42d0eec1759faa5 SHA-256: abcf81954211aab2b1abfb5e478e4d9b85c65b781c42fccd21ee6fe451cbc597
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=denver+fenton+allen+rick+and+morty PDF link annotation
    • http://nakanilo.club/kevejukoginitepomatefiyq9op.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450415/normal_6018cdee3b89f.pdfIn PDF document text
    • http://tikovg.xyz/haldol_davis_drug_guide1e3wg.pdfIn PDF document text
    • http://emmetrix.net/josivipitaxasujejur28kkw.pdfIn PDF document text
    • http://lifeshop.pro/wivewovavsulav.pdfIn PDF document text
    • http://capridigi.com/68197254299hjw7f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462696/normal_5ffb82f2b42f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407781/normal_602c57bfb9160.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/batoragubukepo/87543340774.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/guitar_tab_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/cocktail_dress_code_vs_formal.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/wow_classic_druid_macro_guide.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_off0000dafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFC 5216 bytes
SHA-256: b4e670226ed406ca98ee5d28d2c6609bb8592c0eb022adea6f6bfe3c30f288fc
font_01_sfnt_off0000ecbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBD 10028 bytes
SHA-256: 896fd73f53d2714d7bd8d0094b3a5d45f33889f46c3ba80619a2cfff2c4cf2e9