Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32e9f316549ecd6…

MALICIOUS

PDF

45.2 KB Created: 2020-08-09 21:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: efb7ad78dad90e892df2be0f185bb3f3 SHA-1: 19cf05bc9cd3c7bca4601b2748d815acc6e7de9f SHA-256: c32e9f316549ecd6c62f689ecfeb806491c29f482b5afcb85ba37f856215d2ce
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The presence of a 'download button' lure further supports a malicious intent to redirect the user to a harmful site.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=afcat+1+2020+result+pdf
    • http://muruwe.yichentu.com/uploads/1/3/1/3/131379312/7300281.pdf
    • http://files.dbshawks.com/uploads/1/3/1/3/131380728/waredomata_bogesenavulo_xusanelokupom_furiduradujumi.pdf
    • http://files.cheriejsmith.com/uploads/1/3/1/3/131383588/4456653.pdf
    • http://rujari.millsandcockburn.com/uploads/1/3/1/4/131437044/8623510.pdf
    • https://cdn.shopify.com/s/files/1/0432/5949/4555/files/xaxopaxinoses.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/40478605095.pdf
    • https://cdn.shopify.com/s/files/1/0437/9217/1165/files/meridian_energy_pen.pdf
    • https://cdn.shopify.com/s/files/1/0431/4487/2090/files/tikinaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/risujakinofisep.pdf
    • https://cdn.shopify.com/s/files/1/0436/4229/0336/files/boguvavefukolatamoxevorig.pdf
    • https://cdn.shopify.com/s/files/1/0428/3164/2780/files/91178447309.pdf
    • https://cdn.shopify.com/s/files/1/0433/9128/7461/files/tozijurevi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/3455820777.pdf
    • https://cdn.shopify.com/s/files/1/0432/5690/5885/files/xitagazetogov.pdf
    • https://cdn.shopify.com/s/files/1/0434/0498/4483/files/72005477944.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/angina_de_ludwig_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/kugowelobu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0890/0768/files/dawajuranuxidifusumoxija.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.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/
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/risuja

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000727d.bin
07a44b616e1f48933c96f54ada7ea6eff7ecfc0342e9b5fdd421ef3ff116c2e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x727D 5464 bytes
font_01_sfnt_off0000852d.bin
8e568a1af47435868c07f9e97afa2ea9f805b50e7668253a8c94a1e74b75fa66
pdf-font-stream PDF embedded font (sfnt) at offset 0x852D 10076 bytes