Malicious PDF — malware analysis report

Static analysis result for SHA-256 f19bb8b49df37463…

MALICIOUS

PDF

87.0 KB Created: 2020-12-21 20:26:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f62241df83730962e33f160a36ebf9b0 SHA-1: dd5f91617cb0b13a76f45b2257017ca57de6fc84 SHA-256: f19bb8b49df374639c5929d30faa4ee4879689a93e64ab52f38108b5b2608c35
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ggtraff.ru'. This suggests the document is designed to lure users to a malicious site, likely for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious.

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://ggtraff.ru/123?utm_term=dinamicas+rompehielos+para+jovenes+cristianos In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5f898800099d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387581/normal_5fdf90c99a3f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426066/normal_5fb43506e5933.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/dac000e8-a8e5-4703-ae88-d5c243d947d2/single_stage_amplifier.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dbf0116eb00e3c4bba69/t/5fc205f09ee0f32b8799d096/1606551024504/33061068515.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/aladdin_2019_english_subtitle_srt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e84de0a-3684-45f3-aa39-20cbee60119c/90496907556.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/chat_message_not_delivered_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51b41405d5340f344d674/t/5fcae7dbb6b7366152ee169b/1607133148145/warlord_definition_kid_version.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/deganewubezenorifoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f71e0de-7188-4f46-a7e9-224f8ddb1791/81227767539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f7a4ffe-fcc3-43fc-951a-6ff671b5f894/rarmer_thermostat_chauffe_eau_atlan.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_off0001166e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1166E 5308 bytes
SHA-256: 7d1345511d9298e6086f9aa84841bc34c18361cb009988f6ac4a8d93cda4058a
font_01_sfnt_off00012866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12866 11396 bytes
SHA-256: a4fb9897f01c03b841f4fb4a5c482a62f64d6b19cca6c205bd0b97c45d875f6c

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