Malicious PDF — malware analysis report

Static analysis result for SHA-256 951d255cb5a37d2b…

MALICIOUS

PDF

52.1 KB Created: 2020-08-05 04:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75fa069a0c5cc8e98a8b704b381ff17e SHA-1: 36cd53bbd60c3283e2bea2f26b4d427dc741191e SHA-256: 951d255cb5a37d2b8813db5ebba4d540f08ac20e91e074fe4a1688dc681d08b2
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. It also exhibits PDF_SEO_LINK_FARM behavior, suggesting a large number of outbound links. The document body, though heavily obfuscated, contains text related to eclipses and includes the malicious URL, reinforcing the lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.cc/pify?keyword=solar+eclipse+and+lunar+eclipse+pdf
    • http://files.snowleadershipgroup.com/uploads/1/3/1/8/131871488/pizuvemabedufi.pdf
    • http://files.tracyoneill.net/uploads/1/3/0/7/130775304/lixarado-nugovod-tirufas.pdf
    • http://files.womenartistsreaction.com/uploads/1/3/2/3/132302863/8d22be5d98d153.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/82077678050.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/24871997469.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/zamojof.pdf
    • https://cdn.shopify.com/s/files/1/0438/6367/0944/files/84994058831.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kazapuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vevisip.pdf
    • https://cdn.shopify.com/s/files/1/0450/9263/4789/files/fusionner_fichier_adobe_reader.pdf
    • https://cdn.shopify.com/s/files/1/0438/3142/7234/files/39434641173.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5199/files/navenulovilibofefujoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/2000/files/xodilimuzebuvasanidar.pdf
    • https://cdn.shopify.com/s/files/1/0434/0852/3416/files/74866666849.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_off00008540.bin
4a29aaefab25db4afcc5d450c2ba2d135b315419adba884f96375f831af67678		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8540 5252 bytes
font_01_sfnt_off0000972a.bin
3f99129290b56da29837a20c635de0a7eeb20a2e38cae4e441f2e8a7b7c4a8cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x972A 14100 bytes

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