Malicious PDF — malware analysis report

Static analysis result for SHA-256 3039344df47e642c…

MALICIOUS

PDF

80.9 KB Created: 2021-02-22 17:51:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 029cc752b77d1d96a0ec59966cd50ccc SHA-1: 1e9adb4b85e800c4bae1040efec60ffa331d0248 SHA-256: 3039344df47e642c0bf8aa301ac1d26b528e29e150872bd00da1234f80ed14c7
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with critical heuristics identifying it as a malicious redirector and a link farm. The primary malicious URL identified is 'https://yafferge.ru/strik?utm_term=pioneer+ddj+sx2+driver+for+mac', which is likely used to redirect users to phishing or malware distribution sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to 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://yafferge.ru/strik?utm_term=pioneer+ddj+sx2+driver+for+mac In PDF document text
    • https://sotezogurew.weebly.com/uploads/1/3/2/7/132740991/661786.pdfIn PDF document text
    • https://cdn.sqhk.co/runenuti/hgdgd3I/download_auto_keyboard_for_roblox.pdfIn PDF document text
    • https://sejexogubason.weebly.com/uploads/1/3/1/0/131070030/vetuva-wituwenazijez-pakalusubopofar-fikenozopa.pdfIn PDF document text
    • https://cdn.sqhk.co/runudori/B7hjDjc/world_bowls_championship_2019_live_stream.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/fhggjWp/4807915097.pdfIn PDF document text
    • https://cdn.sqhk.co/kumotuxijufu/emhhjhb/the_third_day_episode_3_meaning.pdfIn PDF document text
    • https://nemaxololele.weebly.com/uploads/1/3/5/3/135304154/4848019.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/dPmhffz/infection_prevention_certification_requirements.pdfIn PDF document text
    • https://guxitokos.weebly.com/uploads/1/3/2/6/132681611/7116000.pdfIn PDF document text
    • https://vesevowix.weebly.com/uploads/1/3/3/9/133987154/fasexikuseni_sosopurilipi_refig.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/megodipewukitoj/32476099928.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/epson_1430_ink_cartridges_cannot_be_recognized.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/whatsapp_status_jio_phone_me.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/astable_multivibrator_using_555_timer_output_waveforms.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/puzal.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/37007219573.pdfIn PDF document text
    • https://www.pioneerdj.com/en/support/software/ddj-sx2SoIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D6 5472 bytes
SHA-256: a6965e56b0727c183bc207bdf4cbcfcc797b0ce82f15646393706e7f4beb132c
font_01_sfnt_off0000f86c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86C 12548 bytes
SHA-256: 2137cf34877cca3043baf2eb08ed90de49ea5b88ec8efad459a23f891560aaa6
font_02_sfnt_off00012048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12048 16264 bytes
SHA-256: b5457af9b5e012ef97043a658d71e169861154de8a6f4bb9c1462e34426c9a19

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