Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a103d135b76089c…

MALICIOUS

PDF

54.5 KB Created: 2020-10-28 22:56:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 0b1be3e74ad0f9d01c45823c479cbbeb SHA-1: 7a12509857ab430846bc383413598b4df7fdfdea SHA-256: 7a103d135b76089cb692a86fb064d40de4973a9f2d52f3956688c39834fa618a
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=njrotc+uniform+dress+blues In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/7971455.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/8747612.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381294/normal_5f939329ef767.pdfIn PDF document text
    • https://wobafedufuj.weebly.com/uploads/1/3/4/0/134012960/6375177.pdfIn PDF document text
    • https://bivogovaxi.weebly.com/uploads/1/3/4/3/134320375/kanidi-dugunufokekadi.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/latonud-nofazadexukopo-jakiwunulok-lovofanutobur.pdfIn PDF document text
    • https://ligavovifoma.weebly.com/uploads/1/3/4/5/134522072/dbba4f962c4e.pdfIn PDF document text
    • https://kulinamolusamu.weebly.com/uploads/1/3/4/2/134234583/lidebenozipadol-dugimosug-rifisipijosim.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/4002550.pdfIn PDF document text
    • https://noxetetejiv.weebly.com/uploads/1/3/4/3/134391164/691ffeb80b.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/zokuzodidud_bemabozerewir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387573/normal_5f904fe680a5a.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/makumepaju-kewebovidibapub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393181/normal_5f904d47025e5.pdfIn PDF document text
    • https://gapefupekud.weebly.com/uploads/1/3/1/8/131871489/c3c282d76.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000973f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000973f.bin)
    • https://s3.amazonaws.com/pibabopuduj/antagonismo_farmacologico.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/talanolok.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_off0000973f.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000973f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x973F 5140 bytes
SHA-256: b6e9e8bfd665cf5a495c25b7fcdd4083ee41c036c402ca877d5898a3d534dec8
font_01_sfnt_off0000a8b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B0 10516 bytes
SHA-256: 7daac38c641e06d7e8928dbacd8909fbe427dbbedade768832f8ae18f4586dc1

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