Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac734452564ca487…

MALICIOUS

PDF

75.6 KB Created: 2021-02-25 01:58:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: eea1ba6c69614a37923d6fc8c3d68d4d SHA-1: 8190549532b15c15dda7b2892e4b3a3d4e5887d9 SHA-256: ac734452564ca487c41a9adc696d84f0f82bad5c5fa8d053ee0a0f924dfa8570
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/award?keyword=neo+classical+guitar+tabs+pdf PDF link annotation
    • http://nizavevorupuj.mywebcommunity.org/best_oil_for_honda_eu2200i_generator.pdfIn PDF document text
    • https://kiruxujekan.weebly.com/uploads/1/3/2/7/132740547/gopozu.pdfIn PDF document text
    • http://navevukosuso.mypressonline.com/how_do_you_describe_sales_assistant_on_resume.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501054/normal_602286550e8b9.pdfIn PDF document text
    • https://ruxevikupasej.weebly.com/uploads/1/3/4/6/134663562/1788337.pdfIn PDF document text
    • https://roribevewo.weebly.com/uploads/1/3/4/5/134502196/23bc2.pdfIn PDF document text
    • https://rebavunegiluzu.weebly.com/uploads/1/3/4/4/134497465/xoxobu-funesoduxine-fawizefaka.pdfIn PDF document text
    • https://paniselodo.weebly.com/uploads/1/3/5/9/135969975/tinusomovepigosa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389361/normal_601e252caf4a5.pdfIn PDF document text
    • https://raguloduw.weebly.com/uploads/1/3/4/0/134041620/tivewuvusapi_depufikonul_tapifev.pdfIn PDF document text
    • http://community-day.ru/ruzevavegegamelkc75.pdfIn PDF document text
    • http://normaa-id.com/895405647dylag.pdfIn PDF document text
    • https://lirodute.weebly.com/uploads/1/3/1/8/131871659/1819888.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/you_never_eat_alone_the_series_eng_sub_ep_1.pdfIn PDF document text
    • https://vuzufakafedovi.weebly.com/uploads/1/3/5/3/135347170/bexuj.pdfIn PDF document text
    • https://sopowifumerage.weebly.com/uploads/1/3/4/3/134355846/1b28467e5b5c1.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/kipefatu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sutexuvidag.myartsonline.com/vegetarian_food_recipes_without_onion_garlic.pdfIn PDF document text
    • https://tabs.ultimate-guitar.com/tab/lessons-scales/arpeggios-based-dm-guitar-pro-1244168SoIn 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_off0000e006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE006 5432 bytes
SHA-256: 31fd8aac0ee6caa4c708b7b048e09830f92cb442fcc52013b837042bc2533aab
font_01_sfnt_off0000f28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28E 15072 bytes
SHA-256: 4f5588bb2142a9e4564814211805864d92a4fc340c8b8da0270f7cd1b4f64493