Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfd9d60ac864fb4d…

MALICIOUS

PDF

42.3 KB Created: 2020-08-19 21:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e16690b8ea067b32fda717f8833cd86 SHA-1: 73ee524ec6479154c1f3e57cd9472e26b1554b1d SHA-256: bfd9d60ac864fb4d4998d420b5df42e6571e102953ac34ac202e2358242fa8c1
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text related to brochure templates and includes the primary malicious URL. This suggests a lure to trick users into clicking the link, which then redirects to malicious infrastructure.

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=2+fold+brochure+template+free++psd
    • http://files.ecguk.com/uploads/1/3/2/7/132740502/laxoraf.pdf
    • http://fizexugew.flaentertainmentinsider.com/uploads/1/3/0/8/130814328/3530869.pdf
    • http://files.rcsales.org/uploads/1/3/0/8/130814475/cf01f20.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/21375146242.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/77284036695.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/41634716493.pdf
    • https://cdn.shopify.com/s/files/1/0431/2511/2988/files/1077563483.pdf
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/vasopresina_y_aldosterona.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/bizutewepavozepulejireki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49605194079.pdf
    • https://cdn.shopify.com/s/files/1/0430/3618/0634/files/memirakiwato.pdf
    • https://cdn.shopify.com/s/files/1/0441/2529/0648/files/journey_2050_worksheet.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_off000066c7.bin
0e4270ae0927a21f675c18f13b7fd380c14ba450519fd7289804209a3fcc35ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C7 5572 bytes
font_01_sfnt_off0000798a.bin
a33552f33d6d589dd1180c6779c50661b6de6513b89ec6587d6824865720e6e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x798A 10272 bytes

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