Malicious PDF — malware analysis report

Static analysis result for SHA-256 4621c9438fb55b77…

MALICIOUS

PDF

81.1 KB Created: 2021-04-21 13:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 9acce5185dd60e4b9cb86c1c6de828bf SHA-1: 4c56c5d374eb0437e16844c861e6a0295b8da4e4 SHA-256: 4621c9438fb55b774f0e621a8c5c2ae47e5d8d60d2280cf7955234c8a860b25e
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. It contains numerous external links, with one prominent URL pointing to a suspicious domain, likely serving as a lure for users. The ClamAV detection as Pdf.Phishing.Trojan further supports its malicious nature, suggesting it's designed for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://botokaw.ru/strik?utm_term=central+pneumatic+air+compressor+40400+parts PDF link annotation
    • http://cleanup-sale.site/1056764862ox3a.pdfIn PDF document text
    • http://moscow-siberian-force.online/brother_mfc_490cw_manualrqidl.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://7a69a04d-b0b3-478e-a927-895b34d3dd44.filesusr.com/ugd/159848_f9dfaca85cca4bb2a50e90f78c109122.pdf?index=trueIn PDF document text
    • https://ba10d46a-d7c1-43af-8542-f1a50f31aa8a.filesusr.com/ugd/4dded2_0d5eadea88614a0fac60da9ff223657b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/mercedes_c220_cdi_2001_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f19750d5-344e-471b-91bf-5394df8c9186/the_young_elites_fanart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a4108ad-caaf-49f9-afe0-95dd7c3a82f2/zoxefevavobudi.pdfIn PDF document text
    • https://c4cd0dbc-23d7-4f11-b65f-2561cec8abe5.filesusr.com/ugd/516793_541b4cab85c3496691c14fc6853713f8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/libeganot/tuxivat.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/movimiento_rectilneo_uniforme_concepto_y_ejemplos.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/spectrum_cable_tv_guide_los_angeles.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/how_to_abolish_the_federal_reserve.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/39265680269.pdfIn PDF document text
    • https://5cbbff6b-7c47-4fbb-abda-9de5069fbc88.filesusr.com/ugd/1a89c8_3591846f66684a6b8e53b0a53e685a23.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/top_50_bollywood_songs_2018_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/pariwizofa.pdfIn PDF document text
    • https://d86ad34a-7df2-4f47-937b-a12ab5abc0fa.filesusr.com/ugd/8cbfce_c45f2895ee704f21b200b4c7353e2d8e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d201667-ee71-45a2-a3b1-bf63d6771a1d/briggs_and_stratton_pressure_washer_carburetor_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/jersey_mikes_allergen_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/biodata_template_for_marriage_proposal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f15b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15B 5216 bytes
SHA-256: ce1198c4d3eb2da006c194d4eab73bf21915e525306546802e0c0f368063e086
font_01_sfnt_off000102fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102FB 11112 bytes
SHA-256: f0cf7d9b8c756fc36882adf1138dd44726de7055f82180c4fb34e6b640d08b64
font_02_sfnt_off000128a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128A5 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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