Malicious PDF — malware analysis report

Static analysis result for SHA-256 0209919bc2afad8a…

MALICIOUS

PDF

64.9 KB Created: 2020-11-13 03:45:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: cbf3300006cb2cbaa6ea0c0e5264665a SHA-1: 849d42367bcf75d04dd4092de83888e13bae2103 SHA-256: 0209919bc2afad8ae21e1fd46f4d7391bec7c8150d16e1c9fe781dacbd5d593e
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm with numerous external PDF links, including one pointing to a known malicious redirector. This indicates a likely attempt to direct users to malicious content or phishing sites. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8899

Heuristics 4

  • 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.
  • 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://traffmen.ru/strik?utm_term=sg-2+nsf+stainless+steel+manual+can+opener In PDF document text
    • https://cdn-cms.f-static.net/uploads/4461777/normal_5fa4fa7f6286c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374021/normal_5f94601582424.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393502/normal_5faa58458c04d.pdfIn PDF document text
    • https://weropejo.weebly.com/uploads/1/3/4/3/134321986/zemurewotadomaxozo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381740/normal_5f917ee4979f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375083/normal_5f8d30755113d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f88495d792de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413735/normal_5f974f107d2d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403127/normal_5fa08ac7baf91.pdfIn PDF document text
    • https://pudarafuweza.weebly.com/uploads/1/3/4/4/134479559/jabulanemuk_guluzebavu_wabafazofil_wixamuniwalabir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f9694fa43f41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417998/normal_5fa24cdaccfb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427080/normal_5f9a5d6925b39.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7576feac-4df8-4989-9fa5-d61cea55c00e/free_south_carolina_travel_guide.pdfIn 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_off0000d1f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F2 5600 bytes
SHA-256: 00e8ff99523c67e4f52de18d25afcf6535bfdb80680a4f50179a14ac4c9e0a5d
font_01_sfnt_off0000e4fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FE 10812 bytes
SHA-256: b6f9f09143aa9140ee2e5d62d0c7553a80c5e895f71f731e9825d0288302e17f