Malicious PDF — malware analysis report

Static analysis result for SHA-256 031ac86ff3549641…

MALICIOUS

PDF

73.6 KB Created: 2021-03-15 05:07:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a4cc9342cc49b649085cd6b5173c8854 SHA-1: 193d6052f135c35d1249e0634ecd41a3ddabf352 SHA-256: 031ac86ff354964160794b9aa624cb31bf91802b58ed8d4510f678cbc26977ee
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs and the document's structure are consistent with attempts to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 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://soxebez.ru/123?utm_term=tamil+news+paper++software PDF link annotation
    • https://cdn.sqhk.co/fafojipedul/ku8Dzq5/filmywap_movie_2019_kabir_singh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489609/normal_60426df5263d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414331/normal_601fb646b91f4.pdfIn PDF document text
    • https://larezonisu.weebly.com/uploads/1/3/0/7/130738889/b59f1fa19cff0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465564/normal_5fd30a0cca067.pdfIn PDF document text
    • https://cdn.sqhk.co/towevefizub/ZXujh9W/download_big_launcher_pro_apk.pdfIn PDF document text
    • https://rebopugosoge.weebly.com/uploads/1/3/5/3/135346619/matefebogopemiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370777/normal_5fd2cc3584e64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486994/normal_602127831d2a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489586/normal_5ffcd9fd16833.pdfIn PDF document text
    • http://refowozawigut.22web.org/systematic_approaches_to_a_successful_literature_review_booth.pdfIn PDF document text
    • https://xowitato.weebly.com/uploads/1/3/0/7/130776358/jijakitaworabo_tuziludumumexa_kurulumod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451210/normal_5ff7fe65893ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460251/normal_5fd158fe30414.pdfIn PDF document text
    • http://geponimodenebev.22web.org/xaxufe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494433/normal_5fe76f7609d66.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/3237d3a9-6c86-4d54-8cad-9a12549e2dd4/fijulupediwax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aee88dd8-148f-4ffc-b563-8e06999def9c/xusenaxesikegepirosew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5433ea33-dd85-4f00-b0e4-e7cebd1ed35f/79113733379.pdfIn PDF document text
    • http://kovusipeduza.epizy.com/android_push_notification_example_in_android_studio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ad628c7-fe4c-41a0-a45c-a3516ab5d28a/how_hard_is_the_ham_radio_exam.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FA 5088 bytes
SHA-256: 14b5b3b4a5c53094565c39e9eb896e8a1d9ba857d8bce3ba23e3d2524ee7b1a0
font_01_sfnt_off0000e73d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73D 3432 bytes
SHA-256: a01d7532da87ff76f97828eb24ac833c6820401b0fdc69e60d2e1842ca9e8277
font_02_sfnt_off0000f3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FA 10928 bytes
SHA-256: b243f9a170e19889731e52de82db4448f0540e9b6183fe8e7a66891718692901