Malicious PDF — malware analysis report

Static analysis result for SHA-256 3392d002f7f899fc…

MALICIOUS

PDF

42.4 KB Created: 2020-08-13 15:32:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73404a06dfd5f0cc373646cc777e1556 SHA-1: 5a481e07ce144e35caa315cfbce6cd9ba3821c3a SHA-256: 3392d002f7f899fc8d1b9b7109b1cb85fdb958bb162e4f563fd753f878263bc4
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=after+livro+5+pdf+baixar'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which point to Shopify domains hosting PDF files. The document body, though heavily obfuscated, also contains the malicious redirector URL and several benign-looking Shopify URLs, suggesting a lure to download or access content that ultimately leads to the malicious site.

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.ru/pify?keyword=after+livro+5+pdf+baixar
    • http://files.imssb.com/uploads/1/3/1/3/131380480/196340.pdf
    • http://firuni.scrumara.info/uploads/1/3/1/6/131636612/84512.pdf
    • http://files.rosewoodranchmn.com/uploads/1/3/2/6/132696030/modinixat.pdf
    • http://files.megansz.com/uploads/1/3/2/6/132682585/kupovewem.pdf
    • http://disulom.ourfamilyunion.com/uploads/1/3/0/7/130775195/2b043ddb1c.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2813/files/56132012760.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/pneumatic_definition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9619/5737/files/93979409204.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/wototipimuxive.pdf
    • https://cdn.shopify.com/s/files/1/0432/7958/1352/files/83682479733.pdf
    • https://cdn.shopify.com/s/files/1/0430/7946/7162/files/6871958334.pdf
    • https://cdn.shopify.com/s/files/1/0429/8260/4963/files/92849539637.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0439/files/11076046897.pdf
    • https://cdn.shopify.com/s/files/1/0437/6359/7473/files/contoh_putusan_arbitrase.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/5703343665.pdf
    • https://cdn.shopify.com/s/files/1/0428/4511/0438/files/lusaxavexefop.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_off0000637b.bin
3564cf9ca73be10e9c9253b2850849863bf93cfba9369b839ed4bd13b3ab2894		 pdf-font-stream PDF embedded font (sfnt) at offset 0x637B 5240 bytes
font_01_sfnt_off0000756a.bin
bb16180c4554d8968fb3c372980453b7ad5aa4cd1b95ff8727ea651b6969a466		 pdf-font-stream PDF embedded font (sfnt) at offset 0x756A 13400 bytes

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