Malicious PDF — malware analysis report

Static analysis result for SHA-256 070ed5bbf572170b…

MALICIOUS

PDF

73.1 KB Created: 2021-02-14 16:16:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 069bfc6120aa5a0b5de59e6f508239a3 SHA-1: d68842127af4cbcbec57dac0d97a713c01ac32ee SHA-256: 070ed5bbf572170bd6fcede442258105d6010f42608954a521521e5020f114dc
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous external URIs, with a specific heuristic identifying it as a link farm on disposable hosting, likely designed to redirect users to malicious content. The presence of embedded URLs and the overall structure suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=myers+briggs+field+marshal PDF link annotation
    • http://bbcua.site/nipisuvohu5yz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464870/normal_5ff682c7d8dd8.pdfIn PDF document text
    • http://cosmosqrab.online/what_remains_of_edith_finch_achievements_guidebrh5u.pdfIn PDF document text
    • http://maslovauto.ru/divesididodizohgzp.pdfIn PDF document text
    • http://prizinsta365.website/pokemon_insurgence_walkthrough9lccc.pdfIn PDF document text
    • http://leqqurint.online/background_laptop_pinkauvwc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490375/normal_5fcbf23ac13b4.pdfIn PDF document text
    • http://tonagruz.ru/autocad_2018_macaad0y.pdfIn PDF document text
    • https://cdn.sqhk.co/kufalavoxig/ghHjejc/40207689086.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380699/normal_6028ed353bb7f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445868/normal_5fee1a0906641.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tezuzatarezoz.epizy.com/jutuzobajo.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_off0000e044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE044 5568 bytes
SHA-256: f6390eefc93f0a421ef51100abe4c37bfd922045e5e555f5f800d51faf4523da
font_01_sfnt_off0000f317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF317 10792 bytes
SHA-256: 790f9fb79176ba4223dbd41132702276db48249330a5dfc308f5ee2666b4b6b1

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