Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d43315bdc8b5ef2…

MALICIOUS

PDF

49.8 KB Created: 2020-10-27 12:42:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c906178f227ea0cb1d895e43eca43a0a SHA-1: 4a362d4a086a9103da6ca667e04fb8dbf659eae7 SHA-256: 0d43315bdc8b5ef235a552f9a424034105aed529ae53edda166d4a9fc6dec8b7
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.link/pify?keyword=simon+lord+of+the+flies+actor In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5f8751ab8b56f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369518/normal_5f8c7441c8db5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375531/normal_5f89653260d7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_5f92a3a87db95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_5f8c3c17d2ee6.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007635.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007635.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000ab47.bin)
    • https://s3.amazonaws.com/fibesezati/woxadusolirolenot.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/intestinal_obstruction_pathophysiology.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/clinical_anaesthesia_barash.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/15043319340.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/vugexubedu.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/100_best_loved_poems_philip_smith.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/sedilasi.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/cbt_exam_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/42260960056.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/23807692865.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/ib_biology_book_oxford.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/counselling_process.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/memekuzunobugir.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/vamajokugupenad.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/fuworigazurive.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/botuwekuseduwiguse.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/dozuwuzowevivarovuve.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/78459263226.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/65805738147.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/bodaronigisipiba.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 extracted file (font_00_sfnt_off00007635.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7635 5152 bytes
SHA-256: e5385b334f955e8da3aa81a8200a302be005da6933be865201d83a251cc2f4d0
font_01_sfnt_off00008771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8771 10820 bytes
SHA-256: c43e22e45576d85493852f4868076c65b7a192cd689e9b43547b62742f3a0119
font_02_sfnt_off0000ab47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB47 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361