Malicious PDF — malware analysis report

Static analysis result for SHA-256 b60bab1ceaecba70…

MALICIOUS

PDF

68.3 KB Created: 2020-11-18 12:40:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1fec83230d966ee44bf7bcfaf1b6aa87 SHA-1: 7a02f9cf1c5bbc55ae8fd927bd077139742aa9f2 SHA-256: b60bab1ceaecba70d98dbf8647784c630d66ef470fd473c1e9f727327699d8c7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm. One of the primary URLs, 'https://traffnew.ru/strik?utm_term=elco+thision+s+test', is flagged as suspicious and likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, contains text that appears to be a lure, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://traffnew.ru/strik?utm_term=elco+thision+s+test PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417815/normal_5fa20cdc5f8b9.pdfIn PDF document text
    • https://kesudidudoj.weebly.com/uploads/1/3/4/4/134477594/1166483.pdfIn PDF document text
    • https://golasokovefo.weebly.com/uploads/1/3/4/4/134490481/tepewafojiro_jijemi_rudot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383165/normal_5f9078e928a74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f8dc635ef445.pdfIn PDF document text
    • https://nivawapononagi.weebly.com/uploads/1/3/4/2/134234681/pudukoxaviwiri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_5f8b284bb2e86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369511/normal_5f992450b4350.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420239/normal_5f9cb2e5aac70.pdfIn PDF document text
    • https://sofakixejiz.weebly.com/uploads/1/3/4/2/134265497/7329720.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/1ff0e8e3.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/521032ff-6afd-4fa7-9245-c83e0a8c70b1/femogigekip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e17695a-0174-4cbb-b1d9-24d801e0218f/patazokuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb49cf5e-e74a-48bb-a541-b2e3206c16bf/fajulatonitebuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b534f69-e3dd-4825-9cfb-3e1ca758bf97/lexavuzen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a27d902-0377-47d9-91e1-65bcd15d8683/the_sims_freeplay_unlimited_money_and_vip_apk.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_off0000d150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD150 4540 bytes
SHA-256: f9606a6787fe0e4d863872487911dc81e3008ac4a5f52be1c495addc69adc1f1
font_01_sfnt_off0000e0c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C4 10408 bytes
SHA-256: 868cfb4c6f4fc56c50997f2bccddcea9156f7add4f656acfc0ebcb933ce6aedc

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