Malicious PDF — malware analysis report

Static analysis result for SHA-256 77b1e696fa0b301d…

MALICIOUS

PDF

45.6 KB Created: 2020-11-08 08:17:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 81cc8bb4f8e4614922ac8c0e4d4e8634 SHA-1: fedfc4fea2926417de8a2e99d6269653bf250a61 SHA-256: 77b1e696fa0b301da35b58c14d063259711c5b5074f6546b76322a4774e9330e
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://trafftec.ru/aws?keyword=the+5+am+miracle+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f91e3b370ab5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372985/normal_5f9161d5c9d74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380080/normal_5f8b9619cf488.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_5f95033ff0eec.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/9611777.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/buxoparadazegu/14331638018.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/ada_diabetes_june_2020.pdfIn PDF document text
    • https://gonomuj.files.wordpress.com/2020/11/president_of_america_list.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/jefemomijeriwikuno.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/zekawoxotozodewisarexamaw.pdfIn PDF document text
    • https://nodexedi.files.wordpress.com/2020/11/vadotifegotawoteze.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/41891801815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdd4832d-b89a-40b7-ba50-75b2daf28978/zonifunofikepulodupuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/10375660872.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_off000071c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C4 5292 bytes
SHA-256: 7148b2654cfc8365f7246430d8dad21d4216758f37955795425031d7bc6c1a45
font_01_sfnt_off0000839d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x839D 11612 bytes
SHA-256: 258ce559bf60e7ff4ed3be5f353282ccfb5b3f0973122becb9169df1f8a76468