Malicious PDF — malware analysis report

Static analysis result for SHA-256 578b443e5895bc6c…

MALICIOUS

PDF

49.1 KB Created: 2020-10-28 20:10:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: be3691b860fb9390169c92d19b5d5afc SHA-1: 5123267db44827016a86349a50eae8edbab4f109 SHA-256: 578b443e5895bc6c76fb55c5e49dda15f4c42b69edb3dd967823169d2417991d
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=bad+spray+tan+on+hands In PDF document text
    • https://xexovelez.weebly.com/uploads/1/3/0/8/130813416/36fed651.pdfIn PDF document text
    • https://fenawivo.weebly.com/uploads/1/3/4/0/134000055/9ca660a12b770.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378175/normal_5f8fd792e21d4.pdfIn PDF document text
    • https://tizupokewa.weebly.com/uploads/1/3/4/0/134013062/d2e667f69c866a.pdfIn PDF document text
    • https://gegakavawedo.weebly.com/uploads/1/3/4/2/134265750/kawevukesujus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f875da229752.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000832e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000832e.bin)
    • https://s3.amazonaws.com/zufaxepixiguxax/vertical_farming_design.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/422b7598-d71f-45b5-99f8-3bdeab2990b8/40483902446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3785/0262/files/pic_collage_with_video_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/59134310374.pdfIn PDF document text
    • https://s3.amazonaws.com/juxatop/bronze_dragon_wyrmling_size.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c631353-3c73-4b13-b203-e6f82ef106df/gefunakokis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e629491c-196e-4059-b59d-d9d0cb2115d0/tigejofifovokowekakosemur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1344/7584/files/docker_tutorial_linux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3306c598-546e-4374-82bf-c8c2b8f2ebad/56258133351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5779/3192/files/44055439823.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/21343926028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc629f65-4f8b-40e8-abdd-d30d01bee0ca/imperialism_in_japan_essay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c24392f1-05be-406e-a8a8-8abcbc145748/84332067226.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/simuguwid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1373/7117/files/12852791706.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_off0000832e.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000832e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832E 5164 bytes
SHA-256: 53c18a9a9727ca46a365813744bac5d043171c3f3465b7664824a8624c314977
font_01_sfnt_off000094c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C1 10068 bytes
SHA-256: 1127e6e496d7cbfd3c8a84d0d61dba10727d0c1380e09e2cedf7d98f16614a65