Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa9bbb6ca5b8f61…

MALICIOUS

PDF

71.6 KB Created: 2021-01-02 03:17:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4c610552afef67daf4ef956511c1988d SHA-1: e76f94e40c057ac0e39bc18979f59a3fb1f6e022 SHA-256: eaa9bbb6ca5b8f6116b6d40cfcf9c43be1dcfae4c306aeb48777bfdf4b35a1d5
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, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The embedded URL, https://traffine.ru/123?utm_term=the+french+laundry+cookbook+download, is the primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution. The ML classifier and ClamAV detection further support the malicious classification.

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://traffine.ru/123?utm_term=the+french+laundry+cookbook+download In PDF document text
    • https://cdn.sqhk.co/felodunom/hMgiRzX/fox_news_ratings_september_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/fovuxugo/VsgYC3u/pallet_furniture_ideas_pictures.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/1505663b-3ba9-40a3-b30e-da0eb10c6595/kill_shot_bravo_region_37.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/732d3e89-2121-416b-b872-202fc9559825/17665890645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a0bcb8c-eb3c-40bd-9b7d-7daf87f2ba90/3340466416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed0c147b-cb4e-4629-bfef-422b524784a4/manual_identidad_corporativa_coca_co.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42f1d1e3-56f4-4287-b960-4002c01906e9/nojomegikadomivinewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d64b4cf4-9603-4643-808a-846d22dd87d4/green_health_docs_rockville.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c932126-f1a7-4fd2-bfc1-ebaacb9891f5/timizovipiruvuzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc228688-d624-47a1-b0ba-f6416506de46/l-dk_pelicula_sub_espaol_completa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/427abbac-a790-40dd-b448-3879436e4bd0/21094479230.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ec0d25c-7216-4177-8271-8bf8fccb2af6/fesinovuwikuzopad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7437e37f-ca8f-4918-83fa-faf607f9540f/animal_farm_chapter_1_lesson.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/visot.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_off0000d909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD909 5276 bytes
SHA-256: 4196bad7f9e76ddc5b4e1d8ad5a7fa1593298472e3974c61b32a082e1b440b64
font_01_sfnt_off0000eb10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB10 11500 bytes
SHA-256: 53fd63aec5bcceb59c2578272c2e0a319c5970f78688069b99cd1c71fc0f604e

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