Malicious PDF — malware analysis report

Static analysis result for SHA-256 af6531d9aa9887bd…

MALICIOUS

PDF

42.6 KB Created: 2020-10-15 16:59:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7a09683ca7a5ee2716c8e17eade93104 SHA-1: ea3eec40e69d887f7431b4cf0b9e35360722e20a SHA-256: af6531d9aa9887bdbd6e632a8152ff00470edaff9d0dfc3e88d33fe325705b30
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=leucemia+mieloide+cronica+pronostico+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_5f87b9b9ecb18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f8720cf36532.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5f87aa30c634c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_5f884d07d53ff.pdfIn PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/solajevawa.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/dolopitubolagu.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/jibigamefomoni.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zuvefusu_tewojawowebav.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8709547.pdfIn PDF document text
    • https://site-1039319.mozfiles.com/files/1039319/32687963002.pdfIn PDF document text
    • https://site-1037130.mozfiles.com/files/1037130/25696570623.pdfIn PDF document text
    • https://site-1040096.mozfiles.com/files/1040096/89243043424.pdfIn PDF document text
    • https://site-1043258.mozfiles.com/files/1043258/24271969417.pdfIn PDF document text
    • https://site-1038999.mozfiles.com/files/1038999/taramisusiboraj.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/8cdfaed8-3d67-4d8b-9d2f-b1f1ba8b2655/sonewumirupowitilevegon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7310b66-0921-4f2a-bfce-618ba23c6962/33147888283.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d33739c-848b-4cf3-95dc-404cf2241a1d/pomominiri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdabdc39-2797-4113-be64-7cd0e7ac86e3/ropebozovof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ccf6e1-03e5-47cb-b6d0-4599f3dacfeb/72695083926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0757/3655/files/maroon_5_maps_ringtone_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7299/5996/files/90778755135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9462/9788/files/heavy_rain_madison_dies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2815/1959/files/hideous_zippleback_toy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/3568/6560/files/dolphin_emulator_android_shield_controller.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_off0000670d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x670D 5240 bytes
SHA-256: 314d9ae0be611a415b10566c46d15db5eb3a00904b6c3477fb695ef919973d1f
font_01_sfnt_off000078c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C0 10736 bytes
SHA-256: bbb1a738b63ca2e09e9c737e5602886ed0494e787c77a411c4e0460320f069e8

Open this report in the interactive analyzer, or submit your own file for analysis.