Malicious PDF — malware analysis report

Static analysis result for SHA-256 54c108c93e208923…

MALICIOUS

PDF

39.9 KB Created: 2020-10-26 08:27:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ce166d1b619c183bd3d71ae66f11b078 SHA-1: e0d747425f83d842b2aefa9d12c834aa8982c8de SHA-256: 54c108c93e208923d054ebb8f62deddd33feec471d9ad3010abc07ae3409eb93
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/123?keyword=craftsman+50cc+chainsaw+manual In PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/71ac0d4aae5779b.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/felizoromubipiworu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367621/normal_5f8a6b2352874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391599/normal_5f90bc35225cd.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005d5f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005d5f.bin)
    • https://cdn.shopify.com/s/files/1/0480/5437/0468/files/45621224479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1042/3487/files/bajesejevetolefuvajes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7374/7140/files/android_sqlite_limit_number_of_rows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3680/9665/files/86866995512.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b8df7d9-af32-4566-95aa-9fd039194985/sears_ksx_super_35mm_camera_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95d1de21-14e9-4ecc-a7da-a4bdfa3155ec/metaphysical_meditations_paramahansa_yogananda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f444e4d0-83ef-4870-a2d8-9a4099c5f17d/zupogojipuvatajelanijusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecc150d0-f6fc-4590-89f6-b52a16c2cd38/godzilla_unleashed_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/67345909159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/0387/4967/files/29830846885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9846/4152/files/agave_oil_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6571/3055/files/nenovudim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9087/9670/files/41504841482.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c1fc6e1-29c7-4637-99aa-403f840e2c38/lugazevatixopawute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5043ec4-e472-45c5-adbc-370f1164937a/autocad_izim_rnekleri_anlatml.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/309e284e-783c-4836-a69a-a8a1438c08b5/tubikodebuvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5994a11-17f4-4f60-b9bd-19e9bc09ed5c/26898951963.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab4eb2d2-1f0e-476c-9b93-0226198fd7f1/88979084859.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_off00005d5f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5F 5384 bytes
SHA-256: ac068a3bde408b99003204cc694a48b25dc525554bfd093c972da9ff24a83bcc
font_01_sfnt_off00006f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8E 10368 bytes
SHA-256: d7f1ba7f51d7f14b8a9d8b5fcbc5caebe0f8916177eddf1faf56eb825f7b2ae2