Malicious PDF — malware analysis report

Static analysis result for SHA-256 16d449f71caa73f0…

MALICIOUS

PDF

54.1 KB Created: 2020-10-28 15:55:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: f38878e2f52d657ed5a58145cc53df6c SHA-1: cb0d79bc0ef812a8a83ae92eab6370e26c9aecd3 SHA-256: 16d449f71caa73f009a12dded366f6ac6d72ce0bbd24bd43ecf732d08e3576d5
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://cctraff.ru/aws?keyword=arlo+pro+4+user+manual In PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/goxip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5f8eebc2bc586.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369762/normal_5f8a903028879.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388162/normal_5f98f4e3beadb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387219/normal_5f8d036730e3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381294/normal_5f91ffad06e0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419003/normal_5f95f3159c7c4.pdfIn PDF document text
    • https://bewarovawizijus.weebly.com/uploads/1/3/4/4/134454629/767269.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/4197107.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/pobuseze-tedufedubaxa-riredixudumivox.pdfIn PDF document text
    • https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/d4e1c811c9.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000093a3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000093a3.bin)
    • https://uploads.strikinglycdn.com/files/4e35a3c5-1ff4-492b-abe8-4a23b7301bd3/fabivinikuremagulositufet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0200/3108/files/saluvafadi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e10019d1-70b1-4803-8aeb-f41cf12b08f1/35559470318.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/42538428819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4295/8231/files/53695904211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5356/4583/files/pickyourshoes_co_mo.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/14593122500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6221/3273/files/wezetuxomemupogugajarifev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8546/6267/files/51165320348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6f55417-c6ba-4cfd-96e5-6af95d40e52a/rimeranovikox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9034293c-ae65-47fc-8f4a-403bc4a57455/35877556750.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_off000093a3.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000093a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93A3 5040 bytes
SHA-256: 679bd6aabbcc5ce544265e2eb8783f0e29bdf09a7736e874f1e7850427247f78
font_01_sfnt_off0000a4b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B1 11332 bytes
SHA-256: f3a7b2c8aa322c6caf38f3db3ef8ea319ffdac7223c2c778193a0999619eb3d5