Malicious PDF — malware analysis report

Static analysis result for SHA-256 a25054e95a46fd25…

MALICIOUS

PDF

50.1 KB Created: 2020-10-15 16:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 1f01b2e83b632d863599ca83290e36f4 SHA-1: e6f896cd7d1768907ab73d7518451813f1744ff4 SHA-256: a25054e95a46fd25fabc19e1bce06de561cde1331eda125ca47019d22a0eec1c
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=network+programming+lab+manual+in+python In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/zutilipevozafeguwu.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/sijuwoxujupid.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/7805117.pdfIn PDF document text
    • https://mogezisatizate.weebly.com/uploads/1/3/0/7/130775403/nenabiwegit.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/3532345.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/regamafizesoxidiwed.pdfIn PDF document text
    • https://sukowaletudevux.weebly.com/uploads/1/3/0/8/130874669/dowuzaro-xemoroziduvaxo-deloninaj.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/3029889.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/maxoku_pazijul.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/1d44b872.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/7873197.pdfIn PDF document text
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/9996348.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/7407937.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nipomomuka_gisotufeje.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/pobudobuguwag-titunerogarof-wijup.pdfIn PDF document text
    • http://www.bogotobogo.com/cplusplus/sockets_seIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2823/9768/files/sleeping_giant_inn_dd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1402/0507/files/fowobetorofenivajenaseri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/pirenovidewij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/9228/4070/files/20706931692.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfd348cc-97a8-4a5c-aa2f-7aa13e0a2bac/regesalamiwuxitirilo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41dffef6-3f7c-4ba4-9a6b-a9c152bc6a96/69745527462.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/138635cf-53f3-494e-a43e-6f060cb5849e/75863540092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4ff02af-c020-47a2-b152-837e150f77bc/60407328484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebd0ebe6-c579-41f9-bd79-a96ad8408fd5/zaregutoniv.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_off000081d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D0 5420 bytes
SHA-256: 5bafa4f6c634415c7ad05d500371942bef38624707c3a052e4ba1384ce28d3d1
font_01_sfnt_off00009436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9436 11260 bytes
SHA-256: 53b33cc2169f98fbbaa51c2c1ed331758d7687125913c9c3a5317ae00469005a