Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dec6fe0323f3a50…

MALICIOUS

PDF

42.7 KB Created: 2020-09-11 15:09:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ab148b1bee05781ebc575fcf266082e SHA-1: 9f8b570bfdedb8c037de2070a9a42ca728b3b68a SHA-256: 2dec6fe0323f3a50c254add8de646096110aa3a47e9bb12d425460a6087fb052
150 Risk Score

Malware Insights

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

The PDF contains a large 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, 'https://ttraff.link/pify?keyword=jasper+reports+server+pricing', which likely serves as the initial stage for delivering further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.link/pify?keyword=jasper+reports+server+pricing
    • http://xepip.alfamwholesale.com/uploads/1/3/1/6/131637562/949331d2.pdf
    • http://files.techsavvi.net/uploads/1/3/1/8/131856703/gilamezetakux.pdf
    • http://files.aecnicaragua.com/uploads/1/3/1/3/131379919/nopotonidugo-pekibolufozizi-fuvepiko-papanupivonel.pdf
    • http://nepax.sjkorea07.com/uploads/1/3/1/3/131398140/f92a8.pdf
    • http://files.silveremmagray.com/uploads/1/3/2/6/132680781/kiletexi.pdf
    • http://files.naturesconfluence.com/uploads/1/3/0/9/130969820/winirikitiwik.pdf
    • http://ginizug.sydneyoland.com/uploads/1/3/1/4/131408024/1529138.pdf
    • http://files.leatherneckclassic.com/uploads/1/3/2/7/132740873/zadiwagakax.pdf
    • http://files.whereisthebrightline.com/uploads/1/3/0/8/130814774/delewavuvet.pdf
    • http://files.shadysideofthetracks.com/uploads/1/3/0/7/130776822/d64a041bb35aa.pdf
    • http://files.lindseyraisa.com/uploads/1/3/2/6/132682802/kinol_fifabebimapi_sufisaxesit_dusubiv.pdf
    • http://files.ecosureuniversity.com/uploads/1/3/0/9/130969077/tiboxomon-xosujuzozen-sosob-muxazakalupola.pdf
    • http://jetunax.calaverasarts.org/uploads/1/3/2/7/132741100/3500105.pdf
    • http://files.lindseyraisa.com/uploads/1/3/2/6/132682802/kinol_fifabebimap
    • https://cdn.shopify.com/s/files/1/0429/9613/8137/files/1807666264.pdf
    • https://cdn.shopify.com/s/files/1/0448/1597/4561/files/58167124172.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2960/files/are_vpns_worth_it.pdf
    • https://cdn.shopify.com/s/files/1/0443/8884/3686/files/colony_characteristics_of_bacteria.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/87811429837.pdf
    • https://aws.amazon.com/ma
    • 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_off0000685f.bin
53be92aacc170380881bf74440bf1852647801415a64ca19446854891e86864d
pdf-font-stream PDF embedded font (sfnt) at offset 0x685F 5116 bytes
font_01_sfnt_off000079e6.bin
41192b6b7f6bdfc2178a092d482ed8370088eee3ddeac78d36ea552c752a9e8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x79E6 10384 bytes