Malicious PDF — malware analysis report

Static analysis result for SHA-256 83150ce2faf51b5f…

MALICIOUS

PDF

42.6 KB Created: 2020-11-09 13:36:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: bd0ecf51270f33adf7783453be521b81 SHA-1: 2522daa2c60537228fcf39b3636727991f895736 SHA-256: 83150ce2faf51b5f8f2c52165ffbe191e522828a7bfe838a4580e414c3ceb8ce
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafficel.ru/aws?keyword=tower+defense+5+unblocked+ninja+kiwi PDF link annotation
    • https://tilawebaxipas.weebly.com/uploads/1/3/4/5/134576196/f5958f8088f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375696/normal_5f9c7e9e1f87f.pdfIn PDF document text
    • https://fefaxositepimu.weebly.com/uploads/1/3/3/9/133986539/kagudovek.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/wewisudate_xugej_garowulexaganu_piwuzu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/29b7e2f2-1191-4cbf-a466-54a08dfc8994/netafibuxaxufexa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5346963-0b5a-4f71-9b97-fe0a872e546b/waboboxudireb.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/96055306579.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c09bc100-69f2-4f45-bf12-97f09b89204a/el_dorado_springs_mo_high_school_volleyball.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/must_declare_the_scalar_variable_sql_server.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/zufazojekek.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/romejetukon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27cd60f4-839f-4402-b6ce-ff95d23171c4/51506483962.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C90 5264 bytes
SHA-256: 238ba9e8a5047e35137519ec47dea8fb9963d78c8e2ed92ebf0a8914e2891ee9
font_01_sfnt_off00006e97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E97 9536 bytes
SHA-256: 766fadfed3bd9dee80c2afdf4c6d38f1851ca2bee3023a415b8b8a94b35748f0
font_02_sfnt_off00008f35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F35 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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