Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aeeb0ec33910013…

MALICIOUS

PDF

77.7 KB Created: 2021-05-28 06:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c2600909265fc0c98db00d8a9626da92 SHA-1: da14a09359e0f3bccd5f6dbe28ad7768c79f4006 SHA-256: 9aeeb0ec339100139f43dedb4bd114ef0f5c251b0977aa425091d927548ca1e5
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://maypoin.ru/strik?utm_term=how+to+watch+call+of+the+wild+uk PDF link annotation
    • https://dijemafewume.weebly.com/uploads/1/3/5/9/135992897/jazoxogorenexe_sefusajetijar_vexujujesivusi_gafisuvov.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392666/normal_600325b956737.pdfIn PDF document text
    • https://kagopibuxewiki.weebly.com/uploads/1/3/1/3/131398156/c8ce32f83886c5f.pdfIn PDF document text
    • https://bixunirejo.weebly.com/uploads/1/3/5/3/135329058/muroguwezogeva.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451206/normal_5ff7588e1c57d.pdfIn PDF document text
    • https://zedodunojoponex.weebly.com/uploads/1/3/6/0/136083391/totatusexusizajolir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489061/normal_600c67e1730a7.pdfIn PDF document text
    • https://rewodudifizaba.weebly.com/uploads/1/3/4/4/134475466/852393.pdfIn PDF document text
    • https://gumopukuzi.weebly.com/uploads/1/3/4/4/134481114/naluvurabubitaru.pdfIn PDF document text
    • https://vazexisosumufil.weebly.com/uploads/1/3/4/4/134465451/wotisenakekuxusozo.pdfIn PDF document text
    • https://jilowenuvugema.weebly.com/uploads/1/3/4/8/134897306/3561187.pdfIn PDF document text
    • https://naridinefe.weebly.com/uploads/1/3/5/9/135959872/nuvibapodoliwuv.pdfIn PDF document text
    • https://weginufakitin.weebly.com/uploads/1/3/4/8/134846544/pufowogijolugudoz.pdfIn PDF document text
    • https://deluneruniji.weebly.com/uploads/1/3/4/0/134012649/babaniri.pdfIn PDF document text
    • https://mabiredozex.weebly.com/uploads/1/3/4/4/134482212/nezaxuforeze-goxugowolupav-pezez-ruwatutukarer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419430/normal_60212d92d0f73.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5f5316e-b525-4a9d-936d-e39627b3cdc0/how_to_learn_piano_keyboard_at_home.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beb022a8-8bc4-4c30-97b1-51ee20ae8049/xuzidesudafawoviboxux.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_off0000f057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF057 4952 bytes
SHA-256: 8b76edd708f686cfad217e8891fb623aa1923aeacff41dd89cb4675dd539c6eb
font_01_sfnt_off00010146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10146 11292 bytes
SHA-256: bfa1482782ae318309ca010e28b00740b9e822e7a94819989dc9213afc0383b1

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