Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d25335cf4d72347…

MALICIOUS

PDF

38.7 KB Created: 2020-08-04 17:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d86da09c20d137cd9318a0cc5dd4b70 SHA-1: 6e6ea1dd2f304e985fb55c7cf44de26599d85e55 SHA-256: 1d25335cf4d72347640afae7236e620cfd988d449ceae06e9496203ce24fbb86
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with one URL specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the intent is to lure the user to click the malicious link. No scripts were extracted, limiting further analysis of the payload.

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=bloody+valentine+james+patterson+pdf
    • http://files.smokymountaintax.com/uploads/1/3/1/0/131069789/vudofirenosago.pdf
    • http://files.sethdaley.com/uploads/1/3/1/3/131380618/2967569.pdf
    • http://files.xjrichert.com/uploads/1/3/0/7/130740124/suxajojakimemu_dagigosaji_kozapudula_tugezuxajiju.pdf
    • http://files.coronadohighschoolorchestra.com/uploads/1/3/1/4/131438324/2091eb6d557.pdf
    • https://cdn.shopify.com/s/files/1/0434/5430/0327/files/84722141921.pdf
    • https://cdn.shopify.com/s/files/1/0431/4152/9762/files/rujiwovuroj.pdf
    • https://cdn.shopify.com/s/files/1/0438/2579/1133/files/fruity_loops_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/avery_template_22822.pdf
    • https://cdn.shopify.com/s/files/1/0437/1467/4841/files/naregorusap.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3670/files/44557896831.pdf
    • https://cdn.shopify.com/s/files/1/0430/2068/1369/files/94476894907.pdf
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/gekume.pdf
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/farmacos_antagonistas_y_agonistas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48975286879.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_off000057ed.bin
d0adf0ae2a2329a55fe2ecbcf395dc475b8309d20555ff25542265eebc426ede		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57ED 5472 bytes
font_01_sfnt_off00006a8e.bin
9bf3b4bb3cc944038643c86cecfa7302ef0e9bd8e4cdff727d1267f2a856a436		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8E 10440 bytes

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