Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb4e4b5fdd73505…

MALICIOUS

PDF

48.1 KB Created: 2020-11-07 09:01:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 180332461a90e1b3aac556031f8ef6dc SHA-1: d27128681d49fc861619a7013f55fcfb74625cc5 SHA-256: abb4e4b5fdd735053526e326d0e6d12cc0a2211d5712eb1c44476053d2d263b0
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=modern+combat+2+apk+all+resoulution PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f8737e3cafe0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405902/normal_5f934137c5afa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f89fdf92cc9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411686/normal_5f93fad91c5fe.pdfIn PDF document text
    • https://zijavenokin.weebly.com/uploads/1/3/4/3/134315340/6b0337090.pdfIn PDF document text
    • https://kulinamolusamu.weebly.com/uploads/1/3/4/2/134234583/loxojitan-nutiku-mojejuzuliwawo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372072/normal_5f92686eaa74d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445544/normal_5fa64429ccac2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408187/normal_5f9242953af7d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a733074-f5e7-40e8-9c4b-11bc2fde0d2d/47532141182.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c12fb412-af73-4459-84a1-b1d8a974d88f/22448756544.pdfIn PDF document text
    • https://nigiluzuto.files.wordpress.com/2020/11/75194047024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da69cfbd-96f3-4d1a-b222-fa7b3c5c4f21/wupirijunidara.pdfIn PDF document text
    • https://mopuxupu.files.wordpress.com/2020/11/167740540.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61e6e937-3998-42c5-9e3d-3dea96a39485/8273030110.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/573f1cba-3505-4a47-9781-6beb2e9bdd38/bexidadulifisi.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_off00006554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6554 5560 bytes
SHA-256: 16162a15f2a0f00c1c499ff5b0fbcac8e93ee34268dfdc269b86c3983e538578
font_01_sfnt_off00007822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7822 2628 bytes
SHA-256: a30cb40fa02cf2a0ce4028f36abc23b35ff2f8a27dfb78ed15de8d799b85a339
font_02_sfnt_off0000834b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834B 14892 bytes
SHA-256: b4b77be0af2562274a83b58bc34694289025660240430e02b45b9ed693aad615