Malicious PDF — malware analysis report

Static analysis result for SHA-256 d21e13faba1d73b5…

MALICIOUS

PDF

168.7 KB Created: 2020-12-04 22:19:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 327c2dc4daa7875f034fdba099a30560 SHA-1: 71df5a75f3507ff0ccadc1fa49f65a5256f8cb38 SHA-256: d21e13faba1d73b5e0999582e03c7a622094b1deaafb8abe6f14bb87e19534e5
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=anaconda+2+full+movie+telugu'. This URL is associated with phishing and malware distribution. The document body, though heavily obfuscated, contains text suggesting a lure related to a movie download, aligning with the malicious link's UTM parameters. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/aws?utm_term=anaconda+2+full+movie+telugu In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421630/normal_5fad51542bcaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387928/normal_5f9776b93a7e2.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/1b477413-ee7b-47de-afa7-2e3058e3f62d/dear_evan_hansen_bootleg_google_drive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d5d043d-a477-405f-80d0-d80d05991163/staples_augusta_maine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5cbe2c7-cf7d-4fc5-9993-5221dd4d0d63/80888908293.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cea40676-c69a-4fba-b8e4-37c448305016/53254226416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2109e3e0-7f30-4d43-bd48-5b3351dbdee2/rezilolurejowakupaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eca404ef-24bb-46d3-b323-1e9b62bf07fe/75768395970.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/kuta_software_volume_of_solids_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a68c0bc-8448-46b1-9360-441691758799/silver_stag_knives_phone_number.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/67175476946.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f88afece-b6e8-45ce-a6d4-c7491d5dd02c/gogavewebidatal.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_off00024905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24905 4392 bytes
SHA-256: d3e0fede31b241f95c767a8e601d8fce1f89b2bf0d1077599b0ab9e851437a78
font_01_sfnt_off0002586c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2586C 5248 bytes
SHA-256: d8441ff15aa8b0632709af517697a5400fd47c5cc7766224f40726a7680cbbcb
font_02_sfnt_off00026a45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26A45 12812 bytes
SHA-256: 433690821f7e2743c4b890dc78ab6d0eb23219aa67e70c70058f8d0ccfaf5f90

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