Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e4b977ccb46d50…

MALICIOUS

PDF

84.9 KB Created: 2021-04-01 20:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a39bb904d0fd076a1f5050ab16ac0093 SHA-1: 765c3332a7cbeda49165d8ffa029fdf087a18732 SHA-256: e9e4b977ccb46d50ef583d709c18fcee23b1371846dc533af97cbb5ccfad3427
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and heuristic firings like PDF_SEO_DISPOSABLE_LINK_FARM point towards a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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 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://leonvi.ru/strik?utm_term=tracfone+lg+reflect PDF link annotation
    • https://cdn.sqhk.co/gepaxulunan/ic872UL/rules_of_survival_aimbot_apk.pdfIn PDF document text
    • http://gelokan.sportsontheweb.net/administrao_pblica_e_governo_conceito_e_objetivos.pdfIn PDF document text
    • http://kodepovorivapi.mygamesonline.org/generos_periodisticos_informativos.pdfIn PDF document text
    • http://movizopolu.medianewsonline.com/dr_ambedkar_books_in_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/gfhjhbA/diwagimolevojidasavijal.pdfIn PDF document text
    • http://megidexabaror.mywebcommunity.org/40652088582.pdfIn PDF document text
    • https://cdn.sqhk.co/borilokam/F0Gtiax/gutaliroxofeniribalira.pdfIn PDF document text
    • http://labebatazavanoz.mygamesonline.org/kinds_of_adjectives_with_examples.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393345/normal_5fe706063de16.pdfIn PDF document text
    • http://bavewemelemare.iblogger.org/73676983074.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411944/normal_60256d6422a21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486534/normal_600809d76a90f.pdfIn PDF document text
    • https://cdn.sqhk.co/xubupigegi/ijOhbhb/53537520962.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419198/normal_605a370899939.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449001/normal_60064cf22b041.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/RgizJEw/inventory_sales_management_software_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gawexerexi.rf.gd/bagegetonijegok.pdfIn PDF document text
    • http://vasugam.rf.gd/titis.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/sibojoxapu.pdfIn PDF document text
    • http://kepagewav.atwebpages.com/24404633961.pdfIn PDF document text
    • http://nojudadosuzaxi.rf.gd/oxford_latin_course_book_3.pdfIn PDF document text
    • http://jumazimedu.rf.gd/63373484923.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/amended_tax_return_form_1065.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_off00010d69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D69 4820 bytes
SHA-256: b3417ac24afd73b17e939675dc0422af1f1790fbf12b518d213988b3b42b030b
font_01_sfnt_off00011ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DDB 12960 bytes
SHA-256: 4070a834632ed389d60422d71d4c8b44fc74b8a8adf2f2bae185f547313648de

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