Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e14dd2f93ed50f3…

MALICIOUS

PDF

76.9 KB Created: 2021-02-17 22:59:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 4c0c4860390639189371e678c79d4feb SHA-1: 11c97aa6010eda84fb3a21732ff122bde0e2854a SHA-256: 3e14dd2f93ed50f336e445df6b31ea2a8b01840f885191980d7a112f6b0f38ca
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 is flagged by ML classifiers and ClamAV as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to host phishing/malware. While no scripts were explicitly extracted, the nature of the embedded links suggests a phishing or malware distribution vector, aligning with Spearphishing Attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=is+there+another+girl+with+the+dragon+tattoo+sequel PDF link annotation
    • http://ketousa.site/sobifdxunb.pdfIn PDF document text
    • https://ganepivojo.weebly.com/uploads/1/3/4/7/134774155/nugopogus.pdfIn PDF document text
    • http://gratoramaa.website/betrayal_bond_bookwlfkv.pdfIn PDF document text
    • http://kudezixajuxuni.66ghz.com/sociology_terms_and_concepts.pdfIn PDF document text
    • http://robertferrell.net/human_karyotyping_worksheet_answerscma1x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494451/normal_60258e9e35681.pdfIn PDF document text
    • https://xewidepomizexas.weebly.com/uploads/1/3/0/7/130775014/vofed-mejenake-vetukiralewojo.pdfIn PDF document text
    • http://bigops.fun/jutapiramirajifizox0izw.pdfIn PDF document text
    • http://chunyoo.com/nifemowapixukutugarofuritucotr.pdfIn PDF document text
    • http://indonesia2health.online/watch_friends_season_8_episode_6_onlineamsy2.pdfIn PDF document text
    • http://uaportal.site/combined_gas_law_questions_and_answersbw7jd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/the_antinomian_controversy.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/intelligent_gsm_alarm_system_g10_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/borokegujuzero/3432490446.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_off0000eef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF9 5240 bytes
SHA-256: 912dd1dec999dd0abe64fe13bf9ee3e03bca8921373857bade1b7d65465f6566
font_01_sfnt_off000100cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100CD 11156 bytes
SHA-256: 541ed6e8c52c7c35131092433651e5f9493454af8cb387bc90556896a649888b

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