Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f37d7cc9d3b1ca1…

MALICIOUS

PDF

71.2 KB Created: 2021-02-23 15:36:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: df6c9370beb3ea5348b47dea73448bd9 SHA-1: 28c6457417925e3ead5c4fda48e604e6ac6e8318 SHA-256: 2f37d7cc9d3b1ca1c5cdccf0a3e65f301633056a40d0063290ad582a97f068e9
154 Risk Score

Malware Insights

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

The file is a PDF containing a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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=how+many+pages+is+white+fang In PDF document text
    • https://cdn.sqhk.co/migefareg/YhhhhKj/geometry_dash_2._2_download_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/Fid3hgD/libizukomejejogusozejasan.pdfIn PDF document text
    • https://cdn.sqhk.co/fosojatesog/anjbAgd/amazon_go_grocery_redmond_wa_98052.pdfIn PDF document text
    • https://cdn.sqhk.co/loboremetoxe/W5ibgdo/21952066681.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gofozumi.epizy.com/pink_glitter_in_the_air_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/54883519032.pdfIn PDF document text
    • http://gugamofizuxeg.epizy.com/bike_ride_game.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/69040048377.pdfIn PDF document text
    • http://refiwamidur.rf.gd/how_to_calibrate_weighmax_digital_scales.pdfIn PDF document text
    • http://bejiteviv.epizy.com/61967116849.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/77199422688.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/vodibeduvolarerarifej.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/capacitor_calculation_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/bodies_by_rachel_28_day_shred.pdfIn PDF document text
    • http://jogupasowedeni.rf.gd/rolufozokowig.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/99869787254.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_off0000d6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D3 5340 bytes
SHA-256: 6d9bd380383adc2b0fc0f88cdd8397fa01db271c4f3bc57d3b9e730ea24249a5
font_01_sfnt_off0000e8fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FA 11532 bytes
SHA-256: 3d4957467303ce28da45340fe29bd8331f2b63f90965508c9affdd40b474e0bf

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