Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4c9f487fc6c8ba6…

MALICIOUS

PDF

84.8 KB Created: 2020-08-04 03:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61802c8259fdd7eb06ed6271b9ee55f2 SHA-1: 73cd305e8b435d78db076694b0eb0f96b69b9360 SHA-256: d4c9f487fc6c8ba617f0eb05bc4be8fb2cdf540a74bef61e7ce78e99aa5a9f03
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=branches+of+government+quiz+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted, limiting further analysis of the payload.

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=branches+of+government+quiz+pdf
    • http://files.urbanag.info/uploads/1/3/1/0/131070678/ea9b2e.pdf
    • http://files.bookcellarlwonline.com/uploads/1/3/1/8/131860787/xejapami.pdf
    • http://files.usmilitaryhonors.org/uploads/1/3/2/6/132681409/toxuvijo.pdf
    • http://xamera.lalocurarock.com/uploads/1/3/0/8/130874631/7796916.pdf
    • http://files.hazzanista.com/uploads/1/3/0/9/130969984/1f1e4ba29397722.pdf
    • https://cdn.shopify.com/s/files/1/0429/3846/6467/files/wegaxedojarijitiwopufizu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/62229317014.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/44732469803.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/fewilumafuvag.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/25952869103.pdf
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/98232316908.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/98679775281.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/57377391112.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/99985384556.pdf
    • https://cdn.shopify.com/s/files/1/0433/4167/6694/files/lojefubin.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da07.bin
7263996cf44049c064aebf3461fd6873ae766683afdf51e86df40d4565c3cfa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA07 5704 bytes
font_01_sfnt_off0000ed43.bin
9a4a0acf3c70fbba9b7d2eb24c3dfc923383c34b2948065c7bb64d7f288bc24f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED43 17024 bytes
font_02_sfnt_off00012226.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12226 16204 bytes
font_03_sfnt_off00013755.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13755 4324 bytes

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