Malicious PDF — malware analysis report

Static analysis result for SHA-256 909443d6d8604f5d…

MALICIOUS

PDF

47.5 KB Created: 2020-09-18 14:10:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 009241f717feacbdce77d10af8c48bd8 SHA-1: 1b67074a00a58267f8ca7df47cc3493bb9baa0f3 SHA-256: 909443d6d8604f5d94673bffdee26af655127e265b5a8c061a1947d2cbce651c
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to a URL that includes a keyword suggesting a hack or cheat for an application. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, some of which are hosted on Shopify. The document body, though partially corrupted, contains the same malicious URL and keywords related to downloading an application, reinforcing the lure. The presence of a visual download button heuristic further supports the attack pattern.

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.cc/wix?keyword=basketball+stars+hack+apk+unlimited+money
    • http://files.aapae.org/uploads/1/3/1/4/131406275/9754189.pdf
    • http://files.chiroability.com/uploads/1/3/1/6/131637853/8febec.pdf
    • https://cdn.shopify.com/s/files/1/0435/4785/2959/files/kokejosewedaxob.pdf
    • https://cdn.shopify.com/s/files/1/0447/8897/3729/files/expense_list_template.pdf
    • https://cdn.shopify.com/s/files/1/0463/1150/6082/files/wowade.pdf
    • https://f6984dbb-86bb-4c59-b6f9-60797f696d82.filesusr.com/ugd/0286dd_1b154f2dff644c07892e03acb52bc837.pdf?index=true
    • https://10a92c42-e791-4231-a430-8c623c127bb6.filesusr.com/ugd/db80c5_36a855f87e504b59b460dc49568cd884.pdf?index=true
    • https://c198c451-c5f7-47cd-aa51-26ccbbd6b91d.filesusr.com/ugd/69695d_832d977bb29b40cb8dec7baf07cd38ea.pdf?index=true
    • https://6fef03f3-6404-4f18-8ca6-a5bcb4c3dd1d.filesusr.com/ugd/f55bec_7e7af73248dc4a75b469c5af7828340b.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/gobitabare.pdf
    • https://cdn.shopify.com/s/files/1/0433/1307/0238/files/seredebitibinazebixikip.pdf
    • https://cdn.shopify.com/s/files/1/0430/0950/7487/files/pinirugepad.pdf
    • https://cdn.shopify.com/s/files/1/0428/6405/0332/files/26246576147.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064a1.bin
ae3f4a3e3edb8924e805341b1b832c3b88d2698fb922fa4068f7d7632d57b5f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x64A1 5668 bytes
font_01_sfnt_off000077c2.bin
f35965439c014a6710bd19f13a61ad95677a0b868842ae856d6f3dd810c4ec83
pdf-font-stream PDF embedded font (sfnt) at offset 0x77C2 10216 bytes
font_02_sfnt_off00009afc.bin
6bfcb1b2fd0e9b6fc7f37d98c076b10a9cb75c7cfc0adc13a38210e26617b8dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AFC 16272 bytes