Malicious PDF — malware analysis report

Static analysis result for SHA-256 1700f660446fd9ab…

MALICIOUS

PDF

41.4 KB Created: 2020-10-26 18:56:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e345d96057674e9580fe40583ae81f10 SHA-1: 874b9299b76b9c472c59b29faedb3391fc4f4de0 SHA-256: 1700f660446fd9aba540d23012942b9174d0a85bf9141452210350bdf015b11b
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://ttraff.me/123?keyword=athens+retina+center+gainesville+ga In PDF document text
    • https://besuxape.weebly.com/uploads/1/3/4/3/134374749/jusibububaluletikij.pdfIn PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/6a03bf6c97.pdfIn PDF document text
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/08b3c9.pdfIn PDF document text
    • https://tumovapexawezan.weebly.com/uploads/1/3/1/3/131398362/5445154.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/vidabudivodeduwokobu.pdfIn PDF document text
    • https://kimumowo.weebly.com/uploads/1/3/4/4/134480515/5a686c413939167.pdfIn PDF document text
    • https://vujuzujotug.weebly.com/uploads/1/3/4/4/134478410/3342327.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000634f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000634f.bin)
    • https://cdn.shopify.com/s/files/1/0462/2372/0602/files/accounting_chapter_6_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9445/1387/files/wiccan_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5879/7463/files/drastic_3ds_apk_emulator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/zemurewovis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6212/4959/files/27259965619.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/sexixarukive.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/snacks_recipes_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8efc7836-81b8-4ebd-a931-f525cacc5978/fetigereluxod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3194ee5-90e6-4c8d-bcd5-9cad2f1bb5e6/70837429024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c859d37-57c0-47da-be00-1a6ccae7f8d6/bblia_sagrada_acf_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/175a2f96-19d9-49cb-9477-b1abc140ec96/lenevigudanomapelegugiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0e51029-ffa8-4a3b-9d8b-eccf735ac03c/59885310153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2702/5050/files/sock_monkey_hat_for_babies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/mimebudaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6245/5191/files/slow_is_smooth_smooth_is_fast_poster.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_off0000634f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000634f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634F 5112 bytes
SHA-256: b02cc531e815fa8e42affeae0cb5e458d3fcb9c55d435b229856eaf85317005b
font_01_sfnt_off000074ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74AC 10432 bytes
SHA-256: 801536dad17d28fce0d5018e9ee16b3ece70680f31116eb5b0793a39b4cd2c53