Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd326d1a35500f96…

MALICIOUS

PDF

47.8 KB Created: 2020-08-19 11:57:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74bdf7aaa58e509407109a38d143098b SHA-1: a3989e5a624cab1d5ae84751b5d2071775f39f08 SHA-256: fd326d1a35500f96deb46761da335c8ccf5e0c6a2156b5ddc2425ebcc7c2c3dd
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to domains associated with SEO link farms. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=drishti+environment+and+ecology+book+pdf'. This suggests the document is designed to funnel users through malicious infrastructure, likely for further exploitation or credential harvesting. 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.ru/pify?keyword=drishti+environment+and+ecology+book+pdf
    • http://wetidosut.needahaircutripley.com/uploads/1/3/1/8/131857120/c3c4ce3e14fe1.pdf
    • http://files.robmartinmarketing.com/uploads/1/3/1/3/131379329/5ac13825a479.pdf
    • http://mekulomik.exploreyourjourney.com/uploads/1/3/2/6/132681670/jemajezipadug-kajexemazegigo-kibumip.pdf
    • http://nibolujaf.missminnesota.org/uploads/1/3/2/3/132303382/cb0344f2.pdf
    • http://bivuf.highwaysnhoofbeats.com/uploads/1/3/1/6/131606289/vuzuxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/aaa_aaaa_song.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gojifazuxosupimuron.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/5871335040.pdf
    • https://cdn.shopify.com/s/files/1/0433/9993/8211/files/internet_of_things_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9645/7884/files/xasuwexarapupunewa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/32956986244.pdf
    • https://cdn.shopify.com/s/files/1/0434/4479/7605/files/functional_anatomy_of_brain.pdf
    • https://cdn.shopify.com/s/files/1/0450/9492/8537/files/kutebofefasadatolaluzu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/4894652573.pdf
    • https://cdn.shopify.com/s/files/1/0438/5954/2176/files/meniwonogetu.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_off00004e54.bin
8c049f9850ca5aa26142e15ec96c7169658c051ba0ac5737de05dbc0d05ea650
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E54 5932 bytes
font_01_sfnt_off00006261.bin
e941e679f9b38043adad2fdd605d52430e53bf2759f29ba339bf12de0c73b341
pdf-font-stream PDF embedded font (sfnt) at offset 0x6261 2884 bytes
font_02_sfnt_off00006e8c.bin
bafb6ad6653a82d93cada2d9e3630a7ea6e4e305c89ed4bdf659986e09b1edf0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8C 14652 bytes
font_03_sfnt_off00009c2b.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C2B 16164 bytes