Malicious PDF — malware analysis report

Static analysis result for SHA-256 030ca8b9275dce10…

MALICIOUS

PDF

65.0 KB Created: 2021-02-12 09:01:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6f6e2f5082798c84363b0035852de2f6 SHA-1: 1047215083da06c106e4d22f34b68e0ca609f68b SHA-256: 030ca8b9275dce104a9f5e73a16e3d3f8d03738a1eee49aae7c1068e0197a3ce
126 Risk Score

Malware Insights

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

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/wix?keyword=citizen+watch+instruction+manual PDF link annotation
    • http://sollabs.xyz/8378850876082vd1.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwaseja/bZfjIlk/hop_valley_bubble_stash_carbs.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxoporerom/jeVjahf/32690277911.pdfIn PDF document text
    • http://sokolov.fun/buwepixufomerivoxqi69e.pdfIn PDF document text
    • http://chambrehub.xyz/minajigob8x0ep.pdfIn PDF document text
    • https://wisamifogafize.weebly.com/uploads/1/3/4/5/134598642/melirivexowe_xodozegu_luzuwowamas.pdfIn PDF document text
    • https://cdn.sqhk.co/xumesapaxoku/duhZGan/serumujotevezukamilejased.pdfIn PDF document text
    • https://tolubezilonis.weebly.com/uploads/1/3/5/3/135348590/vukopelur.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/6IFk32Z/gukuwaxuwogakuvolos.pdfIn PDF document text
    • http://andyhongdigital.com/14609986258nyd97.pdfIn PDF document text
    • https://cdn.sqhk.co/matezafun/Qhc7jdc/kisolabizinuxopeve.pdfIn PDF document text
    • https://cdn.sqhk.co/fegukajebaj/MJjbFOt/73735198106.pdfIn PDF document text
    • https://favapebunekef.weebly.com/uploads/1/3/0/8/130874429/noxujedugijutabogot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xarojapi/7147378468.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

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_off0000c327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC327 5088 bytes
SHA-256: 61280f61f6b6544c30d13aa0a69166828788a6a3d1106d67565087844d58d298
font_01_sfnt_off0000d45a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD45A 10224 bytes
SHA-256: 453520f85c27f1dc70e6282f0d6840e10c518f2ddef7cd5b3a304b287e3d43d5

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