Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e622884ede52d3…

MALICIOUS

PDF

40.9 KB Created: 2020-10-31 22:00:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 9b783d8289ca50eb34f80f71fdcf8357 SHA-1: 1e29f35418d2a32051c71787079e7b44057b2e08 SHA-256: 02e622884ede52d3f8d91a5a9626fd57cad83d515bab8481584364b502ce5733
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link to 'ttraff.club', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the same malicious URL, indicating an intent to direct users to potentially harmful content. No scripts were extracted, but the presence of numerous links and the ML classifier's high confidence point to malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.club/123?keyword=real+steel+boxing+champions+apk+old+version In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402949/normal_5f96025ec6270.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421335/normal_5f987f3aabd0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370054/normal_5f950d165d31e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374021/normal_5f97020cc318f.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/e284a05f-b689-4857-9453-1ae84a1eaa4a/coat_of_arms_rubric.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6006/7997/files/download_barrons_ielts_4th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8200b885-a8f3-41b3-bb1e-eec93547d505/puvove.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/budekegowop.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/agronomy_of_cassava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4672/2965/files/20605728815.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/77150247561.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/635522b8-42db-4bfc-b179-d8a11be87090/mizusanofulep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c09e614a-06f5-4d26-b1c4-73230d9843da/dejedusorowapebitudizow.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/tidutobuzubufibulesikuku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c10e049-df3f-4de3-9383-5e8f4b468c78/jorogobutisoxalofapanulug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7239ca6f-1d76-49de-96da-f53b3482e9cb/wovepajutanuzago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0027a518-4419-48c3-8f68-c7e5359b6121/jakajalab.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_off00005ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECE 5828 bytes
SHA-256: a0d919ce8ade06442da19ec08784738743886b95b6bbd69f64ef8a4fdedd7055
font_01_sfnt_off0000727f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727F 10612 bytes
SHA-256: a52b8a1e0f2bb78801fea7f34d23113c96d039c0a8bb6310c0390ba3b7b55974

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