Malicious PDF — malware analysis report

Static analysis result for SHA-256 eab3dfcbc4be9fe0…

MALICIOUS

PDF

89.6 KB Created: 2020-12-30 03:31:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 602e58ea47cc7d5f61a5cde1517a1ed0 SHA-1: 99c46985133016518b9264cd50ed617b906410d1 SHA-256: eab3dfcbc4be9fe0066c2035728ce8f241a5131b3b597aa4d72657987c0f8a03
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/strik?utm_term=traffic+roads+blocky+highway+mod+racer+tomb+raider PDF link annotation
    • https://xeluluferira.weebly.com/uploads/1/3/4/2/134266649/pemiruzivamix_lujamif_rudamopa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453900/normal_5fcc7080881b7.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/bizuz.pdfIn PDF document text
    • https://veraweno.weebly.com/uploads/1/3/0/7/130739577/mivetakeda.pdfIn PDF document text
    • https://cdn.sqhk.co/fisejadiruw/ji3heMs/gba_emulator_ios_12._1._2.pdfIn PDF document text
    • https://pegiromilu.weebly.com/uploads/1/3/4/6/134683304/f6608a5.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/95b16d17-f1b3-405a-99dc-7555faf01f19/rank_makers_shop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70224d25-cf8a-4c9e-bd1b-7f87be254d23/kisanupibofomof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a73cd600-7a3b-492a-af81-5c05beba702a/tiweratajulufojoxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27bd1b04-8c95-4a0d-908e-ff3563ff3add/skam_temporada_2_sub_espaC3B1ol.pdfIn PDF document text
    • https://s3.amazonaws.com/wifozuxeku/manorumobu.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_off00011c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C75 5784 bytes
SHA-256: 4d0149d648f265e82721309afc6d9b83ced603b2846eb3cfeacc15d72617c9ab
font_01_sfnt_off0001300c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1300C 11868 bytes
SHA-256: ace2eb2ee40734dbb6b57559f6359fbce0af3a1fbc4075439ff91e01df2b83d7

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