Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fff61f47677056c…

MALICIOUS

PDF

52.6 KB Created: 2020-08-26 10:23:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ceac14f782cbc7fd8f601a1c1563488 SHA-1: 3786fe4f7c30dac130ee71d608630c90f16f084b SHA-256: 3fff61f47677056c3a2654273c62c66b0ecbde4ea771620d124686933d961406
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, directing users to 'https://ttraff.com/pify?keyword=windows+7+ventajas+y+desventajas'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though partially corrupted, contains text related to 'Windows 7 ventajas y desventajas' and the wkhtmltopdf application, suggesting a lure to a malicious site disguised as information. No scripts were extracted from this sample.

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=windows+7+ventajas+y+desventajas
    • http://vevuwe.twolidesign.com/uploads/1/3/2/3/132302978/bepavur.pdf
    • http://files.diamonddoula.com/uploads/1/3/0/8/130814714/2c2c78.pdf
    • http://files.twochicksconspiracy.com/uploads/1/3/0/7/130775980/f0f704ea96204ee.pdf
    • http://files.thechakrahousemn.com/uploads/1/3/0/9/130969270/bugedagalo_nikuwivodeji_fumefewineluje.pdf
    • https://cdn.shopify.com/s/files/1/0429/7601/8585/files/dwg_to_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/18377736208.pdf
    • https://cdn.shopify.com/s/files/1/0440/7368/1061/files/93310129518.pdf
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/tamuka.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/vomuparibumuxusodukaxo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/meeker_colorado_fly_fishing_guides.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/babigazawom.pdf
    • https://cdn.shopify.com/s/files/1/0430/0367/4785/files/jupivakaxup.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/inorganic_chemistry_book_by_huheey.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/68135091392.pdf
    • https://cdn.shopify.com/s/files/1/0440/6083/6005/files/6331081850.pdf
    • https://cdn.shopify.com/s/files/1/0431/1960/7965/files/safolumivokux.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_off00007e45.bin
5ff75d10400aa787c0d3c3a21c3c1bd069a810aa86171ec1533dbeec46333968
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E45 4904 bytes
font_01_sfnt_off00008f27.bin
4a8bf8acfa12bc53463e72af7d2c7d68ce666b918a479e93b975e42986ce13f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F27 11908 bytes
font_02_sfnt_off0000b5d8.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB5D8 4324 bytes