Malicious PDF — malware analysis report

Static analysis result for SHA-256 4deca6fe1fbc98d1…

MALICIOUS

PDF

46.6 KB Created: 2020-10-29 05:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: b0a367a398107f77bff280559616b727 SHA-1: 5a7809966adc7f183175c97d7683df7d3ce2d5b9 SHA-256: 4deca6fe1fbc98d16246b97ba7e2b5008edc27b9205bc62bc8b8588912deb1f9
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.link/pify?keyword=human+impact+on+the+everglades In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368970/normal_5f92b4bec880a.pdfIn PDF document text
    • https://riramiseba.weebly.com/uploads/1/3/4/3/134369938/xomizekugi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409093/normal_5f99f788cb162.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_5f8c49f764af2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378151/normal_5f8a92e2cd2a2.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/be1c3dcd071e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403805/normal_5f98721c40a9c.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006973.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006973.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00009f52.bin)
    • https://s3.amazonaws.com/jozetej/author_s_purpose_worksheets_middle_school.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/vetibusapoxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9859d561-852e-47ae-a4c0-4020d95bf6f1/omarion_o_album_sharebeast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2549/0332/files/59586601207.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ac9cca7-f126-43a8-9bf1-81ccff152291/karadonulosukafek.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/radebanawinuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41c64ba7-0f0c-4b2c-836d-199b339c6eb5/dulisuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/5302/0851/files/filmora_apk_download_without_watermark.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8759/6182/files/skyview_manor_case_study_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0957/8904/files/avgo_earnings_date_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6948/0600/files/rinofomisege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55694acb-88e5-4bec-84cd-87ec719ffc68/81949731985.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/saxuviveg.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_off00006973.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6973 5392 bytes
SHA-256: 86c018823e60aca8bf693507d29adb06d3a4ececbb15c6bb1879b39f7de53ada
font_01_sfnt_off00007b91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B91 10456 bytes
SHA-256: e94f05dc35e08efdeaec8957a2650d3f16561b46bbf0011efd6e841cd3cde7c2
font_02_sfnt_off00009f52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F52 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71