Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9bfa7b1bc213f2f…

MALICIOUS

PDF

73.1 KB Created: 2021-01-06 14:24:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f33e1ab87c9c743c3f4a43fe0114c026 SHA-1: 5073b105c35d93a1d79fdafb1efbb6f52cdad6c6 SHA-256: e9bfa7b1bc213f2f68e998ecf2763b2116df8a8588f60d0641dea7a2de69fb72
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and 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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/aws?utm_term=zero+hour+contract+template+acas PDF link annotation
    • https://cdn.sqhk.co/jajotulix/jijagiq/bored_anyone_wanna_chat.pdfIn PDF document text
    • https://cdn.sqhk.co/silakozafi/U1nlEnp/crazy_taxi_3_high_roller_play_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411481/normal_5fa70d803d85c.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/4hjjdew/5926878265.pdfIn PDF document text
    • https://gipewiraxo.weebly.com/uploads/1/3/5/3/135334151/xajulijavapakepofun.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/eijjDwe/homemade_gingerbread_cookies_easy.pdfIn PDF document text
    • https://cdn.sqhk.co/dekaroku/gqjjieL/action_coin_blockchain_wallet.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/Cihiioh/12793910546.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/QahbdqY/54276227298.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/743d4665-533e-41df-b5c4-09ae40280d70/19895337735.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af40fe31-a43b-46a5-84f0-a5d0028de079/54051374094.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f0f6e47-c7d4-4920-b305-3d70d5dc2b74/88729017721.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d9b5861-d287-485c-9387-9f8deb89034d/answers_to_esperanza_rising_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/for_sale_sign_car_template.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/lipogaz.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_off0000e3d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D6 5132 bytes
SHA-256: c550a5fbbf6bef5fc09aa8b702d37bad8c35f103dbc36c5a761ea6181e86e76d
font_01_sfnt_off0000f51e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51E 9948 bytes
SHA-256: 7dc95bcb492ab7797542c6c8a062e7972637432ed7f5b0fb9ad1787237ddeb6b

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