Malicious PDF — malware analysis report

Static analysis result for SHA-256 5946484f54618120…

MALICIOUS

PDF

49.0 KB Created: 2020-11-05 23:49:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 45bbd5ac9512cdbe70137591b28d8123 SHA-1: 21a59ffd66d6866da92af9f08f2e35eac8574574 SHA-256: 5946484f54618120d0b3c27fc353b018dba7657a999d62a871a9cbdf973d7939
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://cctraff.ru/strik?keyword=tech+utilities+license+key In PDF document text
    • https://cdn-cms.f-static.net/uploads/4427793/normal_5f9d232e7c647.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f8cfa499457b.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/bb353648-c199-4dc5-92fe-3c5240212aa0/tantric_massage_nyc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42d74ca1-5c46-4313-9524-1c82d0ba9b17/blessing_in_disguise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3884a011-9258-4040-bdc3-e72fb6550f05/tatixajipub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d084fe1-6ef3-41bd-9a59-e4933d17d09e/68260729032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae807e38-e735-4ec4-a633-eb9d1205b169/ruzowazalotuxosomanokit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47a4fb00-cf93-451e-b4d6-c8770a7eb448/zibonarowagefidazefola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d46af5d-3a5c-4a55-a0ff-6d0bded863e8/mulikubudidazirotenux.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/cash_book_accounting_example.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/words_beginning_with_gall.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/goosebumps_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/79886242651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd97c5fa-5340-42dc-8ace-c16e1283f7b8/the_first_noel_phil_wickham_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/waworoka.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/xibirozavode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e65d514a-1d54-4c45-9fac-41d762afd733/bevitunibonosako.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_off000082a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A2 4696 bytes
SHA-256: c959020e5bbf379132e54444f19452f0e403ed8636a8f3953eef8056314f692f
font_01_sfnt_off000092a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92A7 10884 bytes
SHA-256: ede648feea3772fb2dca358589d2d55c48f710f940fd5c183e64db74cefb0b6b