Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd7f5e3bb252a410…

MALICIOUS

PDF

46.4 KB Created: 2020-08-12 05:29:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4557f8f24c4aad1f3a1edd8ebb21823f SHA-1: d6c839ec3522fc236c1e04170c904c80d5e056a2 SHA-256: dd7f5e3bb252a41074595dece3fdd6d78fdf387fcf9983d9719beabf833a7924
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at 'ttraff.com'. The document body is heavily obfuscated but contains the URL 'https://ttraff.com/pify?keyword=gcta+law+philippines+pdf', suggesting a lure to a phishing or malware distribution site. No scripts were extracted, limiting further analysis of the payload.

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/pify?keyword=gcta+law+philippines+pdf
    • http://files.yifanmake.com/uploads/1/3/2/6/132681536/wimavudugajiba.pdf
    • http://files.vfxnut.com/uploads/1/3/0/8/130874369/nozipoxo.pdf
    • http://vejotanat.sandyruminski.com/uploads/1/3/2/6/132682883/7d1d2.pdf
    • http://files.dmlimos.com/uploads/1/3/2/3/132302963/kokovabatab.pdf
    • http://rulod.livingforlivestock.com/uploads/1/3/1/8/131872269/1560350.pdf
    • https://cdn.shopify.com/s/files/1/0432/6922/6656/files/kosuzaliluk.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/cch_ct_file_online.pdf
    • https://cdn.shopify.com/s/files/1/0434/8697/0018/files/vejemapudutazofesonojowu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9722/files/59302438655.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4640/files/82389107838.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/automotive_technology_a_systems_approach_5th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/6285/3794/files/75063813774.pdf
    • https://cdn.shopify.com/s/files/1/0440/8338/0376/files/arithmetic_sequence_word_problem_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sovir.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/wutexipudililiko.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7174/files/16271608906.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/kunigunowokazawaxabev.pdf
    • https://cdn.shopify.com/s/files/1/0428/7732/1379/files/fotidegexapivexomubujef.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_off000076ef.bin
fcfb94c58391608bdd53493ce5a5c78dfec9e58ea850d77fff379a12d8cfdd93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76EF 5268 bytes
font_01_sfnt_off000088f1.bin
11e72df04cf742ae95ae24335bc619a90ac6b9778b782e8555cf057c0d79ea70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88F1 10496 bytes

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