Malicious PDF — malware analysis report

Static analysis result for SHA-256 5198245e1925ed5f…

MALICIOUS

PDF

44.7 KB Created: 2020-08-08 05:17:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bd7d725aa7a14d416285bb0f8050f15 SHA-1: bf2c665ab8770e897eba8055fcf730f3dee27c55 SHA-256: 5198245e1925ed5f6e0b6be72f32c9bbe49bd23dece3fafb5c2e3a36a5a6644b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, a technique often used to obscure malicious destinations and potentially engage in SEO manipulation. One of the primary links points to a known malicious redirector. The document body also contains the malicious URL, further indicating an intent to redirect the user. No scripts were extracted, and the PDF structure itself is the primary vector for the attack.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=eicar+pdf+test
    • http://files.arabwatersource.com/uploads/1/3/0/8/130814907/tolozavevorupir.pdf
    • http://files.louisemoss.com/uploads/1/3/1/3/131382470/ab50128145ea.pdf
    • http://xafur.brskl.com/uploads/1/3/0/7/130739616/8186165.pdf
    • http://files.kidsrulechildcare.com/uploads/1/3/1/0/131070561/45835c.pdf
    • https://cdn.shopify.com/s/files/1/0433/9482/6396/files/after_effects_expressions.pdf
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/33137837178.pdf
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/tidirobinabokuduwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/8013/9423/files/lab_safety_worksheet_middle_school.pdf
    • https://cdn.shopify.com/s/files/1/0432/1129/2827/files/fetanaromafex.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7644/files/18646962113.pdf
    • https://cdn.shopify.com/s/files/1/0437/6389/2376/files/genud.pdf
    • https://cdn.shopify.com/s/files/1/0434/6380/3046/files/73429915562.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/lupigeguxegupomad.pdf
    • https://cdn.shopify.com/s/files/1/0438/7844/9307/files/57032757719.pdf
    • https://cdn.shopify.com/s/files/1/0435/7190/4673/files/kinomulo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/positive_r_words.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bb1.bin
f53d70de20143b9bf6b1ccd888bde80d32a0315eafcf61784c4a459fb82abffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB1 5072 bytes
font_01_sfnt_off00007d0b.bin
64a90c2bebf1a827bec1afac921ae22f3f8b4b0d29830b2f1a57bae14d2ed13b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0B 12380 bytes

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