Malicious PDF — malware analysis report

Static analysis result for SHA-256 2057abe6a0cf30ed…

MALICIOUS

PDF

69.1 KB Created: 2020-12-06 18:05:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 333c7a6a9549cae8ee4c53e58706ab47 SHA-1: 8560d16fa7f82211f08c4b0f42d4f628295a2077 SHA-256: 2057abe6a0cf30ed3a7e43d57b1df197bced1614cad1483824b2aab0f1ef7b82
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL is a strong indicator of a phishing or malware distribution attempt.

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/aws?utm_term=e+mail+auf+englisch+formulieren In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403804/normal_5fa7105c61395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402712/normal_5f9f2ebda3f95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379043/normal_5f95fb8b23bc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383929/normal_5fb9b91617fa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421787/normal_5f994a595caf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386074/normal_5fc6cac4203ba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xomudufe/1_oz_chicken_breast_nutritional_information.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b56f6ca-ce52-4d21-81b2-bb691f4601a5/lig_tv_izle_ozet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd9307d8-64da-4e22-b91b-6f9f81fa85fc/xowadufod.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/brave_vs._chrome.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/wurenotisi.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/bhairava_songs_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/galosujomutiwo.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/kuvinekudobu.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/acrylic_laminate_sheet_cost.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_off0000d003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD003 5252 bytes
SHA-256: b8c4af1a0dbc082a0d0b679fce820376179fdc43b164800eb3e0977128b580bc
font_01_sfnt_off0000e1b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B8 11284 bytes
SHA-256: 9c618d6472d550602dffbef47f00df451be008ee289a69214544217b448d577f

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