Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db2ac434916ed41…

MALICIOUS

PDF

69.7 KB Created: 2020-11-11 06:50:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 3f773bed34b30114c51ed08124b4ac65 SHA-1: 4bc86ebc030ff17d9ae1d9864d8a840089204227 SHA-256: 9db2ac434916ed41658f28240907c5f69efbcde3d136e0e98196a1fa68daed9b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://trafffi.ru/123?keyword=led+lenser+m7rx+battery PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413122/normal_5f9de94f510cc.pdfIn PDF document text
    • https://kanolapegagidil.weebly.com/uploads/1/3/4/3/134339460/garuziwazowebar.pdfIn PDF document text
    • https://gimifuzakid.weebly.com/uploads/1/3/4/3/134315082/bumaporirojiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e638fe8-809c-42a0-aa37-b365ea8d5348/97698876369.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/male_ballet_dancer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1ed1d19-240b-4985-ad9d-8f7f6ba49d54/63595557065.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/pfc_boost_converter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f60c820-eda2-4a12-8b61-196eb2bee175/24911646834.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/zogaralutu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/808be30f-8cd9-45de-a5aa-4f85f1890c76/deketesiwabadusafesonaw.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/gojupupomenupigoro.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/rugivisadatemopo.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/dusajikuserejut.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/rijipisejatilaponu.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/primary_school_admission_form_format.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_off0000d157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD157 5304 bytes
SHA-256: 4b6f615c81f8cb68a58695b6e68ed79043418ba4035cf2006fa8e493fd1897ae
font_01_sfnt_off0000e356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE356 11272 bytes
SHA-256: 8cd3ad3cb417e1209b1cbe6ae2b6747feaa6b86e9a9bd85e3a158560328e02ba