Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d82e283346d9e4…

MALICIOUS

PDF

42.2 KB Created: 2020-07-08 18:52:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9b86db1124590d463ec7644d39269d3 SHA-1: f3d2b81bcbb46b6213a10d272ca0cb19f3aae7fc SHA-256: e7d82e283346d9e4af7b74fa15f981a91e3f97e2f733aff877c85b593331a399
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed for SEO manipulation. One prominent link, 'https://ttraff.cc/wb?keyword=delonghi%20air%20conditioner%20pacan125hpec%20manual', suggests a lure related to product manuals. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links confirms malicious intent. The document likely serves as a delivery mechanism for malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wb?keyword=delonghi%20air%20conditioner%20pacan125hpec%20manual
    • http://files.decgallery.com/uploads/1/3/1/3/131384789/cc8b20d.pdf
    • http://files.jlaubart.com/uploads/1/3/1/4/131437233/8282909.pdf
    • http://files.beachcitiesrollerderby.com/uploads/1/3/2/6/132682040/giruroboje-raxilu-waxupujenini.pdf
    • http://files.lindyjames-christenson.com/uploads/1/3/1/3/131379612/3953267.pdf
    • http://files.myuntoldpleasures.com/uploads/1/3/1/3/131380158/tetozijakakez.pdf
    • http://files.journeystoflavors.com/uploads/1/3/0/9/130969555/a18860d033.pdf
    • http://files.haywardfitnessfanatics.com/uploads/1/3/0/8/130874413/dugen.pdf
    • http://files.greenlotusdreams.com/uploads/1/3/0/9/130970014/vivijakezos.pdf
    • http://files.thermotrix.com/uploads/1/3/1/4/131407734/12612e9.pdf
    • http://files.exmouthcaninecentre.co.uk/uploads/1/3/0/8/130874128/jenasaj.pdf
    • https://fogojifoxuni.files.wordpress.com/2020/06/43942768610.pdf
    • https://pibaguga.files.wordpress.com/2020/07/97086131025.pdf
    • https://mosamexi.files.wordpress.com/2020/06/16516501873.pdf
    • https://movazizaxe.files.wordpress.com/2020/07/dugutunejamuwolukuwoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96626323422.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vaxopegi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wizivudid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinubigelezegir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74832969368.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/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000671f.bin
504e7cfe2a173c204ac7f985bf3014af4a6e3112afb760c6ce0568188cb0f10b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671F 5496 bytes
font_01_sfnt_off000079aa.bin
24928e865a1bf42302b1647c5fbde8dffbe2ef1ea1585f05cc979f4d11646356		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79AA 9884 bytes

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