Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bd49ddc1461db4b…

MALICIOUS

PDF

77.8 KB Created: 2020-12-24 21:07:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 82b2693aee068e34125981de57fe2fb0 SHA-1: c5393e8620c08b53c91e78927b32c07b71a4d4bf SHA-256: 1bd49ddc1461db4bb4ff1d0c3ec5306589d3f104160b4927daea4f75c94ceebd
154 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 'ggtraff.ru'. This URL is likely used to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious, and ClamAV detected it as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=ark+survival+evolved+engrams+guide In 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/6c104eac-70ba-48d1-841f-b60915ad00e6/20104797221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9674f1df-ff13-46c1-80fe-7084a39a621f/roberto_carlos_singer_now.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e706f9a4-305e-4355-bea3-5dc5cb09374e/61622306037.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0070beaf-ae9e-4a7f-a900-fa76a6c47ec5/lg_gpad_f_7._0_review.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/brighton_high_school_colorado_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d5f1781-b71f-4b5d-8ce4-db1b5a4241ab/xifevimu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b5f8e9e-9abc-4e6c-8184-8d526086a7f1/18100900049.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7db43c6b-db26-4429-8d5b-1b4217afefb3/23877476713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a29ab6e-ed32-469a-af22-667d70f633c1/bakexudososijurujewu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15832980-472e-45ae-a0e6-38e546f5dd5a/dragon_ball_super_broly_movie_english_sub.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/arnold_chiari_malformation_headache.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/gemini_movies_live_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/51102601976.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_off0000f453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF453 5256 bytes
SHA-256: 31a815be83d8e0c1f8300ae7531bd52dbd682957025b587607179439f558395b
font_01_sfnt_off0001062a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1062A 10592 bytes
SHA-256: 1e6ea45738b24931569b0dc8d13c73846b8dc1c04b288bd608a40fe44deca380

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