Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a089cbe620c6232…

MALICIOUS

PDF

46.2 KB Created: 2020-10-14 21:30:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2a4fc9dd25837404673f1cb0f75983bf SHA-1: 143341098c9281fc519e26f21c4fce622d7bc42a SHA-256: 2a089cbe620c6232a01bc06eba539bba1b730ec95d08dbd96a512c3241175ec4
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.club/pify?keyword=lowercase+letters+worksheets+for+preschoolers In PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/jazulifevalosu.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/likanutavorolebonat.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/4630030.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/jibepare-vudaramuzi-refirezagulele.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366382/normal_5f871253d2d98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f8710d036bcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5f873b0608deb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_5f873d1e014db.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/91bbd81d-ea02-44c6-8803-011568f478cd/rimunonisixufudagalemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deeabd2e-703f-4b07-aaa8-38db06ea0c0b/musiwezuvivopekesep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73717eca-74ec-457f-ab12-b4b99e58394e/mumezefimatoxetixevogizap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2564/7784/files/spiritual_warrior_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4574/6838/files/marvel_vs_dc_game_ps2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9548/9189/files/electric_shower_head_instant_water_heater.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/097be0db-f982-4ef8-b893-a42f278eeea2/tovifegeboluzuxugerulowa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0de2af91-e4a6-459b-adce-9888fdf3292d/vurudelurovawigisarone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d079e297-6454-4da2-9646-db5fb1b7622c/xasivaxeraki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb4b4c5a-a35a-4607-9ac4-4118eda3638f/76022075293.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a632434-a47f-464b-ac05-dd37132d60de/89674339977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3fc2609-f69a-4098-b9c8-b973fa603567/6284820244.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93109652-7e81-4a3d-8847-e3f02f942fe2/telububisojakaberowe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e635cb0-4a74-42fe-8f6b-aff815c4e9d4/32846096189.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4eb843d5-d8ea-4225-b72a-cd4c5847b729/suxagitata.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A0 4836 bytes
SHA-256: f02f094bab3fcf766e1d94d478b537d1e7b6d93eae4c2e9a997d430b0a528839
font_01_sfnt_off00007a2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2E 9996 bytes
SHA-256: 7e0eff78ef77a43d924ee942710adaac22a0f65f0b5946f30cf925b17ebe6c5a
font_02_sfnt_off00009c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C62 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c