Malicious PDF — malware analysis report

Static analysis result for SHA-256 245551d46a154103…

MALICIOUS

PDF

47.8 KB Created: 2020-10-28 16:51:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 16afacadeb285ff1b6fb15719b5c371e SHA-1: bfcc03f31c39cdac01e29edbc03dda9ee6de2f1a SHA-256: 245551d46a1541039a144849c8f2004c8faf152470c2632bb70318f1b10478af
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=beauty+and+the+beef+wellington In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5f886de0005b5.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/vunidixeviro_xitosujitupile_kadape.pdfIn PDF document text
    • https://gogipemefa.weebly.com/uploads/1/3/4/4/134471158/zonujakipa-kerore-mukefaxisat-talafibimujot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417221/normal_5f98fc1ddf060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369659/normal_5f8d1bfd1f585.pdfIn PDF document text
    • https://rusokupos.weebly.com/uploads/1/3/4/4/134468665/wizumob_tofuxuteze.pdfIn PDF document text
    • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/253745cd8.pdfIn PDF document text
    • https://vejuvofarazaxar.weebly.com/uploads/1/3/4/3/134355137/bf33bd32f.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/xemipir_xepiwopajo_lofijewuv.pdfIn PDF document text
    • https://gezeteweni.weebly.com/uploads/1/3/4/0/134040803/zotum.pdfIn PDF document text
    • https://purowuma.weebly.com/uploads/1/3/4/4/134472698/bokileka.pdfIn PDF document text
    • https://rugurujumififez.weebly.com/uploads/1/3/1/3/131384765/3798231.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006998.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006998.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a367.bin)
    • https://uploads.strikinglycdn.com/files/33227abe-c6da-4f72-8801-58440ecc3726/divergent_2_online.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/fofaxojanekanemid.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/algorithm_pseudocode_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2539b950-3022-4ab2-a145-ae36b1798cf3/popafusurirabajujeb.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/sikotizajufanukosuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6cd0cde-60f6-44ca-8097-b8aea3593d0e/56738285901.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_off00006998.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6998 5160 bytes
SHA-256: 7f47a881fd7d5f91f3b7663a709826aa3cff451ffa6051069e49b4f02aec8d81
font_01_sfnt_off00007b3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3B 12088 bytes
SHA-256: 20469e2d35f305187591a021d9374cf54639b37d48e52d210cf955cfbe98a20f
font_02_sfnt_off0000a367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA367 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34