Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae259a6a2a0b8af…

MALICIOUS

PDF

49.3 KB Created: 2020-08-09 09:38:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8944a6f254d0771a4bf59c9dd2424b5 SHA-1: e4ab61a298f7cfccbe2f4fbcf450cb73022718a3 SHA-256: 1ae259a6a2a0b8afd975ca4388264a97769fdc8069dd6d759f5036305196aec8
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a reference to the malicious URL. The presence of a visual download button lure and a link farm suggests a phishing or scam attempt designed to drive traffic to malicious infrastructure.

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.ru/pify?keyword=cpa+2020+pdf
    • http://files.thefishonlodge.com/uploads/1/3/0/7/130775714/560bc.pdf
    • http://files.scratchartedinburgh.com/uploads/1/3/0/7/130740458/norefiliguwox.pdf
    • http://getajifu.imanassociates.org/uploads/1/3/0/9/130969723/bozujore.pdf
    • https://cdn.shopify.com/s/files/1/0432/1869/8400/files/mysql_create_user.pdf
    • https://cdn.shopify.com/s/files/1/0432/0870/4164/files/81683137981.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/35718364604.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/53103758770.pdf
    • https://cdn.shopify.com/s/files/1/0430/7258/5881/files/libro_para_aprender_ingles_desde_cero_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9432/files/zopepusatoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/0409/0792/files/dewurifoxuremovi.pdf
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/mijudezogozixupefolizapo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4527/3251/files/89511596137.pdf
    • https://cdn.shopify.com/s/files/1/0431/7442/8829/files/54304531465.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_off0000835f.bin
2929158821e91cf453bc1fc0687d96d7e1b0946e5b76e9e7527b6923e64fc52b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x835F 4908 bytes
font_01_sfnt_off00009429.bin
8b23c62fb7b61ddeab0f4a473c2088413ccd279d66f19765d56c30ffeb272f4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9429 10636 bytes

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