Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab07f96bb59d4a9c…

MALICIOUS

PDF

127.8 KB Created: 2021-03-28 10:34:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: ca932c59abf4365e8505814913066a48 SHA-1: 08ed649cf1c6044babdf9574b9e5669ad3775fad SHA-256: ab07f96bb59d4a9c712b93b2ba190992568c0e87c48ebdd7a5ac8fcb27e8eba4
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards an attempt to redirect users to malicious content.

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://ponafet.ru/123?utm_term=canon+7d+manual+mode+tutorial PDF link annotation
    • https://jisasulozif.weebly.com/uploads/1/3/4/3/134371627/01415ee74f3.pdfIn PDF document text
    • http://rujewazaxijaza.sportsontheweb.net/gakelamub.pdfIn PDF document text
    • http://potobol.22web.org/web_designer_resume_template_psd.pdfIn PDF document text
    • http://pidijajuwupurop.medianewsonline.com/kanukitivatubebudine.pdfIn PDF document text
    • https://cdn.sqhk.co/vizoxaxijojo/djeogd8/chocolate_pudding_recipe_easy_and_quick.pdfIn PDF document text
    • https://fubabogi.weebly.com/uploads/1/3/4/6/134617409/buxilusatowotadoran.pdfIn PDF document text
    • http://leririv.sportsontheweb.net/is_billy_elliot_on_netflix_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/ajdMjeV/realm_royale_crowd_control.pdfIn PDF document text
    • https://vipigenomunopem.weebly.com/uploads/1/3/1/3/131398348/muvete-gofavas.pdfIn PDF document text
    • http://kutebirodomo.22web.org/wetivotagifux.pdfIn PDF document text
    • https://xizimojagetotom.weebly.com/uploads/1/3/3/9/133997363/zilenor_bovofafinikufe_bawiwevewo.pdfIn PDF document text
    • http://rixorevu.getenjoyment.net/somapulataludipidaxiwa.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xirakogo.epizy.com/kutedegebadeza.pdfIn PDF document text
    • https://8e6fe9cb-6e01-49b8-a8bf-add1d7538daa.filesusr.com/ugd/4e948c_75c0ff5fbc2240df95b51de07e4e6fce.pdf?index=trueIn PDF document text
    • https://4cd5eafb-d261-4666-a528-29b55b1676c1.filesusr.com/ugd/8dde66_77cb542040a541b88861264103985909.pdf?index=trueIn PDF document text
    • https://75e6061f-eb7a-4ce8-b546-077bf96366c3.filesusr.com/ugd/2dfd19_faa74218ea804a24b75a1e268265b262.pdf?index=trueIn PDF document text
    • https://a32e93c2-1aa3-4149-af29-aa5d163ab988.filesusr.com/ugd/40336e_4c88f332a9614cc6a7d908932a81e62a.pdf?index=trueIn PDF document text
    • http://budunasetixap.epizy.com/template_power_point_tentang_sejarah.pdfIn PDF document text
    • http://muliwavanebebo.onlinewebshop.net/sir_walter_raleigh_history_of_the_world.pdfIn PDF document text
    • https://d1b6b380-f15b-462b-86b5-0b089ba7d90d.filesusr.com/ugd/f99a33_61a263e9769040ae80b5d98063929f00.pdf?index=trueIn 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_off0001af0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AF0A 2024 bytes
SHA-256: 5d463c1ca2ba263759972376c5dab714ad2616feab9cc704188d1d74dc53531d
font_01_sfnt_off0001b835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B835 4776 bytes
SHA-256: d4f6deddb2b9201bfba9841e2c635525f637b24e036acf912cf7e4f96244338b
font_02_sfnt_off0001c85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C85D 11572 bytes
SHA-256: 1df218f3c10421dc7feade027a6e209fba1320434fc8e39f2f2e26750c099d4d