Malicious PDF — malware analysis report

Static analysis result for SHA-256 241c00d7ccb4137a…

MALICIOUS

PDF

70.0 KB Created: 2020-08-24 05:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 842b3709f8d37e18c42a55fdbfb28943 SHA-1: 1db42e88696972518bfb5fd27c333adbff376e82 SHA-256: 241c00d7ccb4137a6e47c7d66945cce04cdaedf1b6e20574f566998c411ae428
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=caller+tune+tamil+love+songs'. Another critical heuristic indicates a PDF link farm, with 'https://cdn.shopify.com/s/files/1/0431/4795/2292/files/bexusolawijuwopixawitan.pdf' being the first URL in this farm. The document body, though heavily obfuscated, contains the same redirector URL, suggesting it's the primary lure. No scripts were extracted, and the file type is PDF, indicating a likely phishing or redirection 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=caller+tune+tamil+love+songs
    • http://kowuvi.frederictonponyclub.net/uploads/1/3/0/8/130874284/1161439.pdf
    • http://files.nummelinmotorsportgroup.com/uploads/1/3/1/4/131438137/gepigobage_ximemu_nefenisalok.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/bexusolawijuwopixawitan.pdf
    • https://cdn.shopify.com/s/files/1/0435/5211/2803/files/99188284707.pdf
    • https://cdn.shopify.com/s/files/1/0430/8697/1029/files/92904690265.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/xiresojovarom.pdf
    • https://cdn.shopify.com/s/files/1/0432/3855/5805/files/45693001691.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5391/files/create_gaming_logo_template.pdf
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/tuwapebedo.pdf
    • https://cdn.shopify.com/s/files/1/0447/8589/3542/files/99219956268.pdf
    • https://cdn.shopify.com/s/files/1/0435/6263/1326/files/vinafapidekumupaje.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_off0000d2ff.bin
c8a3621688201a8d32feca64792579c284ba54622c8a298b0fcec46ad71e922a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FF 4972 bytes
font_01_sfnt_off0000e3d4.bin
9259d87e2f7fc68c70b718a67c84ec660e2e88e184489c4a6fcc1e18b6343d8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D4 12376 bytes

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