Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcd7c0277231e777…

MALICIOUS

PDF

37.8 KB Created: 2020-08-02 20:44:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88c3ff68f6ae48d6d648dbde7b383695 SHA-1: ed0cf4f50fef22c0558f78f7209b52c69af24a45 SHA-256: fcd7c0277231e7772a00623d1cd87bc0090e639f86d158992e8a1ab245d9912b
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, indicating a malicious intent to direct users to harmful content. The document body, though partially corrupted, contains text related to a 'jcps school calendar 2015-16' and the malicious URL, suggesting a lure. The presence of numerous embedded links to external PDFs, many hosted on Shopify, further supports the SEO link farm heuristic, likely used to obscure the malicious redirector.

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=jcps+school+calendar+2015-+16
    • http://files.whimsicalwit.com/uploads/1/3/1/8/131858287/950f4.pdf
    • http://files.andersoncontemporary.com/uploads/1/3/1/8/131856852/fegozazukunok-dizawasumen-favokuxike-lefom.pdf
    • http://files.byachad.org/uploads/1/3/0/7/130775368/wenuvo.pdf
    • http://files.saujs.co.za/uploads/1/3/1/3/131383698/gimizowaju.pdf
    • https://cdn.shopify.com/s/files/1/0429/2041/1303/files/24711366185.pdf
    • https://cdn.shopify.com/s/files/1/0428/8312/1319/files/wokuriwomuxut.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/todd_lammle_ccna_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/27711098637.pdf
    • https://cdn.shopify.com/s/files/1/0433/4642/8072/files/redemption_manual_4._5.pdf
    • https://cdn.shopify.com/s/files/1/0428/0988/4838/files/wevosanuxipijadifepod.pdf
    • https://cdn.shopify.com/s/files/1/0435/5401/3336/files/pinawera.pdf
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/gogopefedakatanofudivop.pdf
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/94219054168.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0430/4191/5042/files/60734741959.pdf
    • https://cdn.shopify.com/s/files/1/0437/9056/5537/files/michael_phelps_smoking_weed.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000498c.bin
088382288e415b4f1d2fe47198ad1fa5c72bd32105621b591328c7fd1575af57
pdf-font-stream PDF embedded font (sfnt) at offset 0x498C 5448 bytes
font_01_sfnt_off00005bf7.bin
3e2c9bd30a0dafa7c6997a119631f82951b9f8369bf06b419db6ba4f1aa18ca2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF7 9416 bytes
font_02_sfnt_off00007c3f.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3F 4324 bytes