Malicious PDF — malware analysis report

Static analysis result for SHA-256 e77d647f47d84868…

MALICIOUS

PDF

50.5 KB Created: 2020-07-09 20:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fac429da66ce38be8411f6ed35e9328 SHA-1: f2d6342d157ea5e3f02b04f7a4857d2afbbd0314 SHA-256: e77d647f47d848683cdae4109acbaa87d3eec5c17340ae8f2c6dac1008d67488
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to redirector services or link farms. The document body text, while partially obfuscated, includes the URL 'https://ttraff.com/wb?keyword=linear%20programing%20simplex%20method%20pdf', suggesting a lure to trick users into clicking malicious links under the guise of academic search results. The primary function appears to be directing users to potentially harmful external websites.

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.com/wb?keyword=linear%20programing%20simplex%20method%20pdf
    • http://files.powerteam96.com/uploads/1/3/1/6/131607522/812129.pdf
    • http://files.mariacamera-smith.com/uploads/1/3/1/4/131453248/jokipojidiret.pdf
    • http://files.grignonmansion.org/uploads/1/3/0/9/130969085/53e204a6.pdf
    • http://files.godswaytshirts.com/uploads/1/3/2/3/132302815/7c24d7928c8eda5.pdf
    • http://files.foustequine.com/uploads/1/3/0/7/130776514/61e483591e.pdf
    • http://files.krwoodworkings.com/uploads/1/3/1/8/131871894/1591208.pdf
    • http://files.morethansoulfood.net/uploads/1/3/2/3/132302973/timuf.pdf
    • http://files.tedxasb.com/uploads/1/3/1/3/131381756/8135290.pdf
    • http://files.ecclestonpianoteacher.co.uk/uploads/1/3/1/6/131606202/bae2b1b33e2ba.pdf
    • http://files.centralcocfamily.com/uploads/1/3/1/4/131438150/6245733.pdf
    • https://dexubupe.files.wordpress.com/2020/07/rosolizopulizaleterikuxik.pdf
    • https://lotodirod.files.wordpress.com/2020/07/muparobapataxirufemebatak.pdf
    • https://wufabok.files.wordpress.com/2020/07/bewufi.pdf
    • https://dajovofad.files.wordpress.com/2020/06/72245415936.pdf
    • https://tidujexibego.files.wordpress.com/2020/06/vofotelojogazezutazat.pdf
    • https://wixavax.files.wordpress.com/2020/06/72217965275.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sezam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zigomotixiwututorevibalu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xakisone.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dipipopiluniwewikojidil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23158701460.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_off00008729.bin
b354c49e6c5ed109284d1d6693ac318ebd0c290fda97baa634ddb243401accb5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8729 5252 bytes
font_01_sfnt_off000098d8.bin
48c2fdb0c4ad7d0719eeb6ac8533e063486b4bc3ea9bc7a45e18a946cac4763f
pdf-font-stream PDF embedded font (sfnt) at offset 0x98D8 10480 bytes