Malicious PDF — malware analysis report

Static analysis result for SHA-256 377dc1c4da8a105c…

MALICIOUS

PDF

42.4 KB Created: 2020-08-05 00:24:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7937a40db1113dc995fe5ca61392f02d SHA-1: 49474abd56d66b475b712ea038371ed8dbfb78c9 SHA-256: 377dc1c4da8a105c43ac7269a368f465b830ac88242c434a4d299ccc3986209d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. The primary link redirects through 'ttraff.ru', a known malicious redirector, to a page related to 'budgeting and budgetary control'. This suggests a social engineering lure to drive traffic to malicious infrastructure. 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.ru/pify?keyword=budgeting+and+budgetary+control+in+public+sector+pdf
    • http://files.algonacwrestling.org/uploads/1/3/0/7/130738531/505431.pdf
    • http://files.shindigpublishing.com/uploads/1/3/1/8/131857540/2019771.pdf
    • http://files.cjentzart.com/uploads/1/3/0/7/130740316/861a9a6ecb.pdf
    • http://files.explorestanton.com/uploads/1/3/1/4/131453216/6741733.pdf
    • http://giwixu.newerictex.com/uploads/1/3/1/4/131483372/dojavikule_bawina_kafidadaso_jugifokimufed.pdf
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/4764655729.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/78933078897.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/powomaliguge.pdf
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/99510439975.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75555741983.pdf
    • https://cdn.shopify.com/s/files/1/0432/4887/7736/files/tatalaksana_diare_pada_bayi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/33503311329.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/2303797269.pdf
    • https://cdn.shopify.com/s/files/1/0434/1019/4582/files/autocad_2020_tutorial_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1827/2417/files/ginejipebakazajedavu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1707/5868/files/batch_compress.pdf
    • https://cdn.shopify.com/s/files/1/0433/6173/0718/files/xasasu.pdf
    • https://cdn.shopify.com/s/files/1/0439/9126/9534/files/firutozapawaf.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_off000066e6.bin
7d5bc1f21f217c7f97843e0a55f1aacdf0237adcfda524127e2ebbea8f2afb66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E6 5612 bytes
font_01_sfnt_off00007a14.bin
67bc30f77dda49c3f648cc8c96dd6e7308a10fbcdd6040dcefba9f3f202c4911		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A14 9964 bytes

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