Malicious PDF — malware analysis report

Static analysis result for SHA-256 033375a42ad92c79…

MALICIOUS

PDF

79.1 KB Created: 2021-03-13 17:45:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 16aacec2a6c8ad5108a672d17e987072 SHA-1: 5a6022b6c032ed8bae5d9f827cb044faffd149be SHA-256: 033375a42ad92c79abfb113ddbe3eb5584a2ad6fb65405c0bb648e3ab46edbb9
186 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 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://mezovuduw.ru/123?utm_term=dream+girl+movie+song++djpunjab PDF link annotation
    • http://supportcopyright.net/vewulemasiwd4jp.pdfIn PDF document text
    • http://getoditatogufop.22web.org/add_stylesheet_to_html_body.pdfIn PDF document text
    • http://sallehq.xyz/administracion_de_medicamentos_ivkpxwi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zonezeg.rf.gd/software_architecture_design_patterns_in_java_partha_kuchana.pdfIn PDF document text
    • http://wubulunonowov.epizy.com/dipadudamatulafatinap.pdfIn PDF document text
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_68a59c496daf4603a02140690313be86.pdf?index=trueIn PDF document text
    • http://zagiwis.rf.gd/fixed_asset_capitalization_policy_template.pdfIn PDF document text
    • https://3c86e5df-9a55-47dd-9d5b-c207b25ec6cd.filesusr.com/ugd/72bf36_2ac4be64acc9463bb86b4e4324dc75ca.pdf?index=trueIn PDF document text
    • https://6f84c080-6bd2-4154-8ce1-0e390380bda5.filesusr.com/ugd/defdb4_68a7455847aa4044a4c5296fdf43e456.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dd69984-3625-43f8-99a8-26305e110ff8/kekuxisupexeju.pdfIn PDF document text
    • https://1f49b3f1-4b09-4f89-88df-03804352fc9a.filesusr.com/ugd/a51aec_2b725d870a2b42c7b00f46fba3824aaa.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f814dfa6-2b80-4c07-85c3-921b3d34e34f/bufiwatifu.pdfIn PDF document text
    • http://vosimamasi.epizy.com/69551798366.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75b28a2d-6f4f-4989-93c3-e0cc18cab48a/haier_mini_fridge_compressor_not_running.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a72dc869-9d7a-40c7-9da4-edfb234948a3/fender_frontman_15g.pdfIn PDF document text
    • http://xijaxatob.epizy.com/pesuzizuvipolipifuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cee3f12-58c8-4006-a8e2-90d76a9d7d8e/pikakotov.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_off0000f6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C7 5552 bytes
SHA-256: 4bf87ec60fc7f0c81f083615b578898e81a1532edcc190269796c47c16fb7ba3
font_01_sfnt_off00010999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10999 11072 bytes
SHA-256: 7d62b2dd7e7d26c8ae7a9125cb91659379616faf6f4d3217c19a614b47e4bb6e

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