Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3bd627c9fdec662…

MALICIOUS

PDF

101.1 KB Created: 2020-08-05 23:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d030927fb38ce33e9c49c6b482f4b4b4 SHA-1: fb92dac66a2bb32a247183c707da820490f08b7d SHA-256: e3bd627c9fdec6627a1d84baf78fedb02d64661199126d34d8b62f8bb5cae8e4
160 Risk Score

Malware Insights

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

This PDF file contains a malicious redirector link disguised as a document about 'ant colony optimization'. The heuristic firings indicate it's a link farm designed to redirect users, and the document body itself contains the malicious URL. The presence of a visible LOLBin command execution instruction suggests potential for further malicious activity, though no specific script was extracted to confirm.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=ant+colony+optimization+pdf+2020
    • http://files.lifeunshattered.com/uploads/1/3/2/8/132815767/detimad-kedeniduxizoli.pdf
    • http://files.fengshuixing.com/uploads/1/3/1/0/131069934/68d5c.pdf
    • http://files.alpinelegendspixiebobs.com/uploads/1/3/0/7/130776795/lekonuvuborod.pdf
    • http://files.dreamoncurls.com/uploads/1/3/1/1/131163858/liwejad.pdf
    • http://files.brooklynprimary.school.nz/uploads/1/3/0/8/130874493/3082819.pdf
    • https://cdn.shopify.com/s/files/1/0434/5466/0758/files/12138377435.pdf
    • https://cdn.shopify.com/s/files/1/0437/8014/5313/files/7590683923.pdf
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/wijomiro.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3346/files/franklin_covey_planner.pdf
    • https://cdn.shopify.com/s/files/1/0433/8476/6620/files/58356375463.pdf
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/27638581798.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/rakapuvivufadanuwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/3692/6374/files/30324965459.pdf
    • https://cdn.shopify.com/s/files/1/0431/0640/2453/files/jajizowu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3274/6906/files/14299550075.pdf
    • https://cdn.shopify.com/s/files/1/0434/3247/6838/files/horaire_ligne_2_alterneo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000121c8.bin
55b79ffcbb13e8dfc8352f269ea533901823dcc34bc362223c5fbd6a040727bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121C8 5112 bytes
font_01_sfnt_off00013319.bin
baa7ca09247c53fd3ede7592a82978f89ec7f74043ab5e643a584e0cdba3cbbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13319 14824 bytes
font_02_sfnt_off00016255.bin
893e6e9ee11e29dd7bd1d5ca7aca18c3604daefb51990c21de46a6c05ac6f8dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16255 16260 bytes
font_03_sfnt_off000177e8.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x177E8 4324 bytes

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