Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd4680cb1deea88…

MALICIOUS

PDF

80.1 KB Created: 2021-03-29 05:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: f28f7a3068d1d42ba6296ac4bd1b8686 SHA-1: 00e608d5f65dc181a2c21af37b6118f7549fdde8 SHA-256: 0dd4680cb1deea880b4d1b03da14ecbdca061666a189105e50ba7acb8a1e54fe
186 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The document body, though heavily obfuscated, appears to contain search terms related to movies, likely as a lure. The presence of a PDF_SEO_LINK_FARM heuristic firing and multiple unknown reputation URLs strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/123?utm_term=wrong+turn+movie++free PDF link annotation
    • https://cdn.sqhk.co/kufezagivori/eWhfhaI/vurevumunapikibatasox.pdfIn PDF document text
    • http://laulu-go.ru/xusivilebmwtn.pdfIn PDF document text
    • http://saudiautoinsurance.com/cuestionario_geografia_sexto_gradoo9h9x.pdfIn PDF document text
    • http://item-mask.top/xumekusabowokuvers1o0d.pdfIn PDF document text
    • https://cdn.sqhk.co/lekibefefu/ficjgMI/8949671455.pdfIn PDF document text
    • http://xviiivbgz.com/pikigoisvgf.pdfIn PDF document text
    • http://patajafurep.mywebcommunity.org/37349532020.pdfIn PDF document text
    • https://mewurotimopu.weebly.com/uploads/1/3/1/3/131381658/9189695.pdfIn PDF document text
    • http://baranaydin.org/wade_figurines_price_guide0qm8h.pdfIn PDF document text
    • http://roxelejabojafe.scienceontheweb.net/pretty_little_liars_the_perfectionists_soundtrack_download.pdfIn PDF document text
    • https://zemedabumudog.weebly.com/uploads/1/3/2/7/132712209/590167.pdfIn PDF document text
    • http://woxuruko.medianewsonline.com/bill_gates_biography.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/tebarosiso-kupozaxabix-wadibinolo.pdfIn PDF document text
    • https://cdn.sqhk.co/tuminageka/jgjgyhf/mad_planets_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/iaeuAgh/associate_graphic_designer_salary_nyc.pdfIn PDF document text
    • https://nozirurabi.weebly.com/uploads/1/3/0/7/130738896/diwowexuvoxiludipu.pdfIn PDF document text
    • https://vusimipemukebev.weebly.com/uploads/1/3/0/8/130814393/9404482.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e082cb0d-9c22-4a21-acb7-e2c6127a51d3.filesusr.com/ugd/ff0c06_286ec845c2a24a08b4ef9a7f8ce60f5f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/biography_of_abraham_lincoln_in_short.pdfIn PDF document text
    • https://e0fa0743-814d-41de-b6a5-47f787911882.filesusr.com/ugd/89d2ef_7c7046c4fed2462a9a05c3cbaad56f53.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/kewavokesukefekizu.pdfIn PDF document text
    • https://9e269ae7-c3cf-4b9f-bde2-1d9be064b7bf.filesusr.com/ugd/139869_a81f109d27eb412b9d023ea1fdb1d4e9.pdf?index=trueIn PDF document text
    • https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_6d8b148b633d47d3bc68a169b0bee35d.pdf?index=trueIn PDF document text
    • https://e5447efa-8854-4d04-834e-f0bbd7438c8b.filesusr.com/ugd/ac612b_2682fd946d284bd7a0460fa4943b8255.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/video_maker_application_free.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_off0000fdca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDCA 4740 bytes
SHA-256: e670673037af6a08150a94d1e501fa371bc8504d12652153da2b0048acec8469
font_01_sfnt_off00010dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DEE 10812 bytes
SHA-256: 802e58ca1075469bc261c9cb73393986e6c6cf9c816c8f8244d5bf9aea841762