Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b849a74032ff2d9…

MALICIOUS

PDF

71.7 KB Created: 2020-11-10 13:40:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 9ac3125b6b8efb8bf3efa8888745fae8 SHA-1: 82e2a38c0be38f6ccd0f497e8fdfb7c0fad0e169 SHA-256: 9b849a74032ff2d980f8559c449a9c497df5976438d5b8bf21465b1cd5c9e731
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector pointing to 'traffine.ru'. The document body, though heavily obfuscated, appears to reference movie titles, suggesting a lure to entice users to click on the malicious links. The presence of a malicious redirector and the link farm heuristic strongly indicate an intent to direct users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/strik?keyword=watch+fifty+shades+of+grey+123+movies In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369907/normal_5f88a8d1972e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415756/normal_5fa028083a69e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409244/normal_5f9530fa6c0fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471099/normal_5fa8e93dee754.pdfIn PDF document text
    • https://zusamazoboxo.weebly.com/uploads/1/3/4/5/134527389/lirosa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468554/normal_5fa3a2f1ae3a4.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/gofozuvekatuwuda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368229/normal_5f88dafcada16.pdfIn PDF document text
    • https://vuxilimibipemop.weebly.com/uploads/1/3/1/4/131453056/f3369ef4f93f5d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/rokuwapesu/58891967592.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/the_lion_king_2019_streaming_vf.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/pagelutuxomusix.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/directv_channel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/game_of_thrones_season_1_script.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F9 5608 bytes
SHA-256: 95f21e302e1a5949c1624c7951c0ecc742672969f695cc91f30bef8583759299
font_01_sfnt_off0000c730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC730 12256 bytes
SHA-256: 93392a2975c0bb82f01325d659695e36e86bd9d3a1c7511ce19e8ee93369f908
font_02_sfnt_off0000ee38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE38 16076 bytes
SHA-256: fce21d86c2b5faa43a5619d6c859002d414ef8720c10ef6ba746f045f1b0bfa7
font_03_sfnt_off000102e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E6 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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