Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ba5d7c7ec80020d…

MALICIOUS

PDF

41.8 KB Created: 2020-08-25 10:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26521a46df9e9bb3ceeaa43ef97f7928 SHA-1: 1df30b300b6c28430ceb81ff28f861486aa4fcdb SHA-256: 4ba5d7c7ec80020da1c4174ca6e59cc97eb13f213e620507b111a85fd7ec3420
170 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=photoshop+7.+0+portable+32+bit'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on cdn.shopify.com. The presence of a 'password-protected archive lure' heuristic suggests the document is designed to trick users into believing they need a password to access an archive, likely to bypass security scanning. No scripts were extracted from this sample.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=photoshop+7.+0+portable+32+bit
    • http://files.visceral-entertainment.com/uploads/1/3/1/6/131637839/fitugalovo.pdf
    • http://zulote.stmaryscadillac.org/uploads/1/3/1/3/131379732/zezoja.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/how_to_write_progress_report_example.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3749/files/5624194259.pdf
    • https://cdn.shopify.com/s/files/1/0437/0055/1830/files/38527135713.pdf
    • https://cdn.shopify.com/s/files/1/0434/7995/7669/files/rakapezujabomidi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8647/8489/files/emule_server_list.pdf
    • https://cdn.shopify.com/s/files/1/0437/5884/6110/files/17746611519.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/45435537958.pdf
    • https://cdn.shopify.com/s/files/1/0433/8994/3971/files/48102175601.pdf
    • https://cdn.shopify.com/s/files/1/0436/1319/2349/files/22328815979.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/90496791754.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2317/files/vepelutaxamoxofoxidet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/86487281380.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/1/0431/5529/2317/files/vepelutax

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006166.bin
750066a28335713e57287ac496d76b8a77483924688e0d9ff78e784b9d6ca545
pdf-font-stream PDF embedded font (sfnt) at offset 0x6166 5600 bytes
font_01_sfnt_off00007469.bin
2738f46d54260812edcbefbcafc87824ce9b2de39ae3603f306e645838e2bf9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7469 11656 bytes