Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad486b5e94424dde…

MALICIOUS

PDF

80.5 KB Created: 2020-08-28 06:20:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a85f4a828dffef2d3630368f51889240 SHA-1: a8d35440fd0becc70b6e22834f659f402f34972a SHA-256: ad486b5e94424ddee02c292170ce5af09e5507887647a677f9c6eeceab1f59e5
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=how+to+save+in+kingdom+come+delivera'. The document body, though heavily obfuscated, appears to contain this same URL. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector is likely social engineering via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=how+to+save+in+kingdom+come+delivera
    • http://files.soulfoodcrystals.com/uploads/1/3/1/4/131437535/b88ba9b4d8c.pdf
    • http://sugexez.openthedoorleadership.com/uploads/1/3/1/4/131453558/dadixexoxovore_zezax_zigitetob.pdf
    • http://files.gooseontheroofoto.com/uploads/1/3/0/7/130739450/fewimabedadogi-fomijadanasis-vaxipupedivep.pdf
    • http://files.tarabarkerfineart.com/uploads/1/3/0/7/130775205/zalatuliviwalos.pdf
    • https://cdn.shopify.com/s/files/1/0433/4823/0297/files/madinogosevupodavubedenis.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/jesisijul.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1549/files/lubijoxurunubidul.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/zapasuxeviz.pdf
    • https://cdn.shopify.com/s/files/1/0433/1995/1513/files/nozozowoxamapon.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/pubevagafatezigogigame.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5555796470.pdf
    • https://cdn.shopify.com/s/files/1/0429/6212/4959/files/wubopefemow.pdf
    • https://cdn.shopify.com/s/files/1/0466/8902/6212/files/divinity_original_sin_how_to_respec.pdf
    • https://cdn.shopify.com/s/files/1/0432/8669/1998/files/passione_pizza_antonino_esposito_download.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_off0000fd7a.bin
6d472f32737e0033a33116cd7ce4d53f154d007edf5635b5a3a094f186a2461d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7A 5436 bytes
font_01_sfnt_off00010fee.bin
2673c41705c56a8732ad0944d73c4835641a9687f258627a226aa891f2de95e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FEE 10296 bytes

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