Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a07305d64b65530…

MALICIOUS

PDF

43.1 KB Created: 2020-09-05 04:39:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30a850684b08aca0749981f23cee1ace SHA-1: 6e0420f89d6977387486d797f3b64ff4482cc275 SHA-256: 5a07305d64b65530499be3f0b899d021cb32780064c3aeff27197be5f4f123c7
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains a mass external link farm, with many links pointing to benign Shopify URLs but one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and text suggesting a download lure. This indicates the document's primary purpose is to redirect users to malicious content, likely for further exploitation or malware delivery.

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.me/wix?keyword=brave+frontier+2+hack+apk
    • https://cdn.shopify.com/s/files/1/0436/9596/4328/files/levasupirijes.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/tonukuvafoke.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5900/files/protagonist_vs._antagonist_definition.pdf
    • https://cdn.shopify.com/s/files/1/0432/4828/7904/files/sikopisixedate.pdf
    • https://cdn.shopify.com/s/files/1/0433/1490/5256/files/paid_in_full_receipt.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/68292233021.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6421/files/fuvivimutanedowavigibobe.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8458/files/allahabad_high_court_aro_syllabus_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/8604/4570/files/mukosidadubozuma.pdf
    • https://static.usrfiles.com/ugd/ae15ca_9fa09967328e47b392a5227959d980d1.pdf
    • https://static.usrfiles.com/ugd/b222ea_8cd0acdc4b624f6a92ad25fa0ca5b16d.pdf
    • https://static.usrfiles.com/ugd/0c4177_2721d5bddf014959bd734c967f8c44d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_e2a19e217fb24ed497f8a376ff22ed6f.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_off0000622f.bin
1ce414a8173ec9dc3b37378950ebce791f763589600eb4bb5a36f2c631dccbd6
pdf-font-stream PDF embedded font (sfnt) at offset 0x622F 5196 bytes
font_01_sfnt_off000073e2.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x73E2 1800 bytes
font_02_sfnt_off00007c6f.bin
d4f9bf794d84857dea710f3cd7260cc1aa10b88ac85bede742b76e81d1983f5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6F 10440 bytes