Malicious PDF — malware analysis report

Static analysis result for SHA-256 9beda35b6221c919…

MALICIOUS

PDF

43.3 KB Created: 2020-08-19 01:18:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52596dc6d70708a3e5084a7075ab280e SHA-1: 39d708c7d97c1a562878e3016f611d7d9882e6eb SHA-256: 9beda35b6221c91943c03cb66852b3ac4ff831e796760ad67cacf24288ed9fe9
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains text related to 'army pt uniform regulation' and includes the malicious URL. The PDF also contains a link farm heuristic, suggesting it's part of a larger SEO-based distribution effort. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=new+army+pt+uniform+regulation
    • http://files.heroinanonymous585.org/uploads/1/3/0/8/130814245/jukuperidivutimapenu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/vozasugamirelu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/origen_del_nervio_vago.pdf
    • https://cdn.shopify.com/s/files/1/0431/1692/0994/files/animetv_apk_6._0.pdf
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/fagamuzusuvadopuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0667/2546/files/20491920050.pdf
    • https://cdn.shopify.com/s/files/1/0430/4545/3985/files/sosegodawikufox.pdf
    • https://cdn.shopify.com/s/files/1/0430/8067/9577/files/base64_to_image_c.pdf
    • https://cdn.shopify.com/s/files/1/0436/3547/4590/files/xamika.pdf
    • https://cdn.shopify.com/s/files/1/0430/8077/7882/files/16633449245.pdf
    • https://cdn.shopify.com/s/files/1/0433/8388/1893/files/uji_boraks_pada_bakso.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/resozelofik.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/892413524.pdf
    • https://cdn.shopify.com/s/files/1/0431/9431/9009/files/wolunemabidunoxikejesatix.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_off00006b30.bin
eb05ac43206cc1241f26e7af250654fa29bdd4f46b55d516922515820f97f76d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B30 5204 bytes
font_01_sfnt_off00007cf3.bin
aea8774243346255a99fb015775f503b1efbee8d1f39bf7be0eb00635c89fc6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF3 10440 bytes

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