Malicious PDF — malware analysis report

Static analysis result for SHA-256 49cfc6d1d2a2af41…

MALICIOUS

PDF

49.4 KB Created: 2020-11-07 06:57:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: b09ac664e12d7b7d5431c1099b9c8513 SHA-1: f9bf0c38818f5259e15c4b85b7f15b35665d4a5b SHA-256: 49cfc6d1d2a2af41f2979b629e90b4b62887d09dba633af4b7492920ce9a7b1f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://gettraff.ru/aws?keyword=the+master+plan+of+evangelism+pdf In PDF document text
    • https://kudoxere.weebly.com/uploads/1/3/4/5/134591480/pusozagexudeb_goviguxeb_zavikeluwelup_xakevimin.pdfIn PDF document text
    • https://tumogifizutuvo.weebly.com/uploads/1/3/4/5/134527103/d7009830.pdfIn PDF document text
    • https://limumowitizuwag.weebly.com/uploads/1/3/4/5/134587832/vojivixukurujojoti.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/8c1127db71dab.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/memul/list_of_terrorist_attacks_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/400940832.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/befob.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/bivanigezevilitonumegem.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/28874334807.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/law_of_multiple_proportions_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/76950660353.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/construction_of_autotransformer.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/gary3dfxtech_firestick_tv_apk_s.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/43245758541.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3425752-0d03-46fe-a716-70a444ba5b0f/dovuzesapo.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_off000082ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82AE 5464 bytes
SHA-256: 5957b5afa7cbde46be0e3b1d7e7a9d074de5c4002eff6cfb851983e8876e68e2
font_01_sfnt_off00009520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9520 10300 bytes
SHA-256: a3c446d525e6b0278b56e6d939be386b0624432fe8ec90b5bf2d7bc794c65bcc

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