Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbae6ac677848ac…

MALICIOUS

PDF

58.3 KB Created: 2020-08-11 22:30:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 477d22249f44ecfc7b798625c319935e SHA-1: 65bd603f5086f02559acc021e96a3b87f148dd2c SHA-256: adbae6ac677848ac4a10745033d2d9a93a400ce2d463904a40983d73090e9d18
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector identified by the heuristic. This suggests the primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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.ru/pify?keyword=anfotericina+b+complejo+lipidico+pdf
    • http://files.adventuresinwhitewater.com/uploads/1/3/2/6/132695741/semexivikitol-zidojamenodej-sinijo.pdf
    • http://files.esoteric-alchemy.com/uploads/1/3/1/3/131384113/saziropaxisi_xoxetimodukum_zujisalanovuku_vulofobez.pdf
    • http://files.goringgapinbloom.org.uk/uploads/1/3/2/6/132683292/dipizefe.pdf
    • http://files.prospectingmimeticfractals.com/uploads/1/3/1/4/131453124/fotoli.pdf
    • http://lowoti.birichinokids.com.au/uploads/1/3/0/7/130775085/jizakoxujo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/fekasodoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/16010656124.pdf
    • https://cdn.shopify.com/s/files/1/0431/2167/2341/files/90819025774.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/separation_process_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/23901222340.pdf
    • https://cdn.shopify.com/s/files/1/0444/3511/2103/files/appreciative_inquiry_steps.pdf
    • https://cdn.shopify.com/s/files/1/0431/9071/4532/files/memugatugi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6374/6465/files/cycling_cap_pattern.pdf
    • https://cdn.shopify.com/s/files/1/0440/0336/0926/files/english_to_english_dictionary_file_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4743/files/42417868319.pdf
    • https://cdn.shopify.com/s/files/1/0437/1480/5914/files/electronically_sign_preview_mac.pdf
    • https://cdn.shopify.com/s/files/1/0434/1157/0838/files/48428778257.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_off00009b15.bin
4f5b14d427aba064d06453acc50c37b72f89aceaa9ffa10c81c0cace20b8473e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B15 5328 bytes
font_01_sfnt_off0000ad14.bin
eda7ce6112c8b3190ec4615acefacd35e6d5a9d6071cd1d1f9ad340f795efbcc
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD14 14900 bytes