Malicious PDF — malware analysis report

Static analysis result for SHA-256 84696eeea728b444…

MALICIOUS

PDF

41.3 KB Created: 2020-08-19 11:45:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 816a4cf24f1f3901ad5a0faa808c3121 SHA-1: d892bd8e0f9d23074a6efc52e22434f54286416b SHA-256: 84696eeea728b4441a13a11db579b79d8054110cca9bc61c128c2d56febb4584
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO spamming operation. The primary malicious URL identified is https://ttraff.cc/pify?keyword=happy+birthday+sheet+music+piano+pdf. While the document body contains text related to sheet music, the embedded links and heuristic firings indicate a malicious intent to redirect users to potentially harmful content or manipulate search engine results.

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=happy+birthday+sheet+music+piano+pdf
    • http://lomide.thessadventure.com/uploads/1/3/1/1/131164531/0fd22441c.pdf
    • http://files.hhhschoirs.com/uploads/1/3/1/3/131398428/8542871.pdf
    • http://denexilug.voicescienceworks.org/uploads/1/3/0/9/130969723/taderu-jotonij-risusapes-dezode.pdf
    • http://wajixalo.libratheater.org/uploads/1/3/2/6/132681947/6228170.pdf
    • http://files.merob.studio/uploads/1/3/1/0/131070374/vonijoxaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4835/files/ravutalodatutubogori.pdf
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/alive_lyrics_hillsong.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/fonaturekov.pdf
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/fujugase.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3557/files/geometry_angle_relationships_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/57630788562.pdf
    • https://cdn.shopify.com/s/files/1/0454/7267/8054/files/crs_company_reporting.pdf
    • https://cdn.shopify.com/s/files/1/0438/0449/1936/files/lagu_gratis_salah_apa_aku_dj.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_off0000630e.bin
ac1081012ed651b5b742646d75e471775e4c1fce7706521c8e69933cadcfc820		 pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 5564 bytes
font_01_sfnt_off000075cd.bin
22545b5d0d04b9c76f2a8f1156c0a5524fb5350192d4cf5f7c743c144bf9d6a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75CD 10088 bytes

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