Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a595f7c81e8812…

MALICIOUS

PDF

71.1 KB Created: 2021-02-17 22:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 6f1735e4c884a072654d61f723f633cf SHA-1: d7c56d2d8189bf3e79c0658308a9d448e5417b61 SHA-256: 69a595f7c81e8812b73e31062baf4db86bd6c787ef2a2e92c1cdb14981f97924
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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/strik?utm_term=cuanto+vale+un+metro+cubico+de+agua+en+bucaramanga PDF link annotation
    • http://masuvanoleseg.iblogger.org/property_irregularity_report_american_airlines.pdfIn PDF document text
    • https://winakafefumo.weebly.com/uploads/1/3/1/3/131397983/6e41d780917d.pdfIn PDF document text
    • https://wotujajatedigi.weebly.com/uploads/1/3/5/2/135295120/8375762.pdfIn PDF document text
    • https://xigogedamexov.weebly.com/uploads/1/3/1/3/131384098/9203284.pdfIn PDF document text
    • https://wusedutewaxugag.weebly.com/uploads/1/3/1/4/131437839/9884234.pdfIn PDF document text
    • https://xujesosa.weebly.com/uploads/1/3/6/0/136090165/vujajeruxejek.pdfIn PDF document text
    • https://tamoniwezetiro.weebly.com/uploads/1/3/5/9/135961995/dozunodakolig.pdfIn PDF document text
    • https://regutipedazuvi.weebly.com/uploads/1/3/1/0/131071249/lezejasifusu.pdfIn PDF document text
    • https://kebafilononuxo.weebly.com/uploads/1/3/1/3/131378837/2ccda3ab457.pdfIn PDF document text
    • https://badadivuzadan.weebly.com/uploads/1/3/4/5/134523039/modofopuv.pdfIn PDF document text
    • https://tetiwaxope.weebly.com/uploads/1/3/0/7/130776033/pasuxukezuri.pdfIn PDF document text
    • https://dowolozudatu.weebly.com/uploads/1/3/4/0/134000293/duxoxujipubofam-dajuzebovomake-pobuvexosupit.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/magapeguwabe/facebook_page_photoshop_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/beginner_esl_vocabulary_worksheets.pdfIn PDF document text
    • http://kokitivem.rf.gd/transform_botchling_into_lubberkin.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/15506103446.pdfIn PDF document text
    • http://tinasixubu.epizy.com/71430681571.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/pokanolo.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/bsc_magazine_april_2019_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/call_of_duty_ww2_wiki_guide.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_off0000d73c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73C 5188 bytes
SHA-256: b8ee7be5e7f1d524b01da6f19c13af408af014a02e76b13bc389ecbe223d47ad
font_01_sfnt_off0000e8c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C9 11736 bytes
SHA-256: 414fe8a4a13233eaef9392ba26635078809017f9a9e500ce0807d7465c4a19a2

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