Malicious PDF — malware analysis report

Static analysis result for SHA-256 5423d2aa86e3c4d3…

MALICIOUS

PDF

63.1 KB Created: 2020-12-18 02:15:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 57bb188d7678b3047808c4854e75bf71 SHA-1: 67ad8439b6808c63189898f5a423ace6f1d31e42 SHA-256: 5423d2aa86e3c4d34703fca2903850f102e92df290cbe3aec58d128bdd866083
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to suspicious domains and identified as part of a link farm. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate that these links are intended to redirect users to malicious infrastructure. The ML classifier and ClamAV detection further support the malicious nature of this PDF, likely used as a lure for phishing or malware delivery.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/aws?utm_term=tamilrockers+ultra+hd+movies+free In PDF document text
    • https://tigibivimibi.weebly.com/uploads/1/3/4/3/134344299/mavufuxapadazuw.pdfIn PDF document text
    • https://burufazifefep.weebly.com/uploads/1/3/4/5/134584298/wubapadu-fuzeluxuv-virol-wubonazi.pdfIn PDF document text
    • https://pewugitunuwirex.weebly.com/uploads/1/3/4/3/134373176/vogixiku.pdfIn PDF document text
    • https://warakamaluxib.weebly.com/uploads/1/3/4/3/134378328/nibowi.pdfIn PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/balibusoxuriduze.pdfIn PDF document text
    • https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/ca1683013.pdfIn PDF document text
    • https://vavezumejut.weebly.com/uploads/1/3/4/6/134655991/gefozos.pdfIn PDF document text
    • https://kaledawuvilef.weebly.com/uploads/1/3/4/7/134727412/5811278.pdfIn PDF document text
    • https://lifowedo.weebly.com/uploads/1/3/4/7/134707215/petizevonukezak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc15332cd1e280355d72b07/t/5fcdf681c00f007cea0c922d/1607333513082/word_cookies_daily_puzzle_august_24_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc114532bbd74065807882e/t/5fc175343570fb44d139c520/1606513973030/nornir_chest_god_of_war.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55ad4085bf90c0e1ac87b/t/5fccbb5a83d2ac65cc1077ac/1607252830242/74094139156.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/69766846477.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/photoshop_free_for_windows_10_softonic.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2908dc89e1c4b8fc91e59/t/5fc45e96e6d49a06bb1e44bc/1606704791099/67248136041.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_off0000b8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8FE 5332 bytes
SHA-256: deec25104ffbd0bb2a09fa8f8130f44170b91c8d8f88d63140db3b3d705cd1b1
font_01_sfnt_off0000cafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAFC 10676 bytes
SHA-256: 294c54a492dad72dc8890d71fb4b7999f291af1811918cf9e73c1dd8071b5a6f

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