Malicious PDF — malware analysis report

Static analysis result for SHA-256 a372f8d5dfaf6c6a…

MALICIOUS

PDF

45.3 KB Created: 2020-08-07 15:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cf6585b8ac678a433e6bfb152abbbd8 SHA-1: cb535ecb2ad6cb8750fe2fbbe602879ec78446a5 SHA-256: a372f8d5dfaf6c6a5694e3622ed93af2a915c66f3a902d34bda7b092f9acdc80
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=schooled+book+pdf`. This URL is embedded within the document body, suggesting a social engineering lure to trick users into clicking it. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination. No scripts were extracted from this sample.

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.com/pify?keyword=schooled+book+pdf
    • http://mamosewi.sternarts.com/uploads/1/3/1/4/131437657/riwujuti.pdf
    • http://dofilaki.baileycreekdoodles.com/uploads/1/3/0/9/130969744/3416157.pdf
    • http://files.uncdf-a2f-kigoma.com/uploads/1/3/2/7/132740892/sezitavalojej.pdf
    • http://duloke.joyandjoebaby.com/uploads/1/3/2/3/132302921/fodugosepopojupot.pdf
    • http://files.acaciaaccessories.com/uploads/1/3/1/1/131163932/1833531.pdf
    • https://cdn.shopify.com/s/files/1/0435/0522/1784/files/88177118182.pdf
    • https://cdn.shopify.com/s/files/1/0437/6756/2391/files/27129933531.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xomuburisuxenogiduta.pdf
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/dagamogisozinij.pdf
    • https://cdn.shopify.com/s/files/1/0440/6044/2774/files/97281821767.pdf
    • https://cdn.shopify.com/s/files/1/0440/4638/5317/files/61765476283.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1632/files/dilojubudubo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/87970379424.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/93440758195.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/98264728447.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/86678490621.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_off0000739e.bin
e2c5985964014c25580ff7c371ceb309db2581717d683e521db2edeff6e07043		 pdf-font-stream PDF embedded font (sfnt) at offset 0x739E 5068 bytes
font_01_sfnt_off000084dc.bin
7ec80cb677a3c829443ac5aec571bca79d7dbd612c93697c1cc4a845c357349a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84DC 10372 bytes

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