Malicious PDF — malware analysis report

Static analysis result for SHA-256 327ff3faeb1121dc…

MALICIOUS

PDF

42.4 KB Created: 2020-08-11 05:22:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84117083b7230bef040588c517f49fbb SHA-1: 7edb86722e6d357d3f6c976ca4e1466c320c54f0 SHA-256: 327ff3faeb1121dc6ca7400cfc6c9acbbb491961ea8cd487cf9486e1b1cdc604
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to scholarship results and includes the malicious URL. This suggests the PDF is designed to trick users into clicking the link, leading them to malicious infrastructure. No scripts were extracted from this sample.

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=endeavour+scholarship+result+2020+pdf
    • http://files.magdalenakarlick.com/uploads/1/3/0/9/130969934/1db2e19f96.pdf
    • http://files.caminoarts.org/uploads/1/3/1/4/131453990/ketopajumak-rewokisur.pdf
    • http://lokog.babsbeadwarehouse.com/uploads/1/3/1/0/131069839/zowukeb_lusabaxizegake_jupumibirixuj_nufetipepib.pdf
    • http://files.nsghs-ogu.com/uploads/1/3/1/4/131409264/poguda.pdf
    • http://files.westtrailmassage.com/uploads/1/3/1/4/131437299/limeketux.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9832/files/wejivijiliwosebap.pdf
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/jalemusezolikosalamemi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2718/5316/files/walbro_carburetor_troubleshooting.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pejolezogumulugadajo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2428/4824/files/xaluniperugo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4494/files/81651184672.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/28580304633.pdf
    • https://cdn.shopify.com/s/files/1/0432/5428/4450/files/83125647660.pdf
    • https://cdn.shopify.com/s/files/1/0438/6032/8608/files/89014325975.pdf
    • https://cdn.shopify.com/s/files/1/0434/5636/4711/files/lipebugos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesitoxerevujadutag.pdf
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/11671667336.pdf
    • https://cdn.shopify.com/s/files/1/0429/5432/6179/files/93363085828.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/calisthenics_beginners_workout.pdf
    • https://cdn.shopify.com/s/files/1/0436/3347/5737/files/1632903174.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_off00006650.bin
e325cf04df1a872481c67735449bc59be129c0855482e9e800da5bbd71b64b10
pdf-font-stream PDF embedded font (sfnt) at offset 0x6650 5536 bytes
font_01_sfnt_off00007924.bin
69980f51975534f162c6f31ba251c13554ee4542b48b9e41f73d6b0b33b00eaa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7924 10304 bytes