Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa22d9be0421cbde…

MALICIOUS

PDF

44.4 KB Created: 2020-08-10 20:06:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffb7c95cb8205334eb87359804c0f4a6 SHA-1: c39dddc1096b471efdd6e13cf2e53b66899fdc2e SHA-256: aa22d9be0421cbde3483fb6d0330539eb9df3071b0358e21a6e8962dcd3ccf26
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body itself contains garbled text but includes the target URL, suggesting a social engineering lure. 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=anatomia+y+fisiologia+del+cuello+uterino+pdf
    • http://files.mylifephotobooks.com/uploads/1/3/0/7/130738722/jusufefek_putabeguwixe_tidox.pdf
    • http://files.mouelhi.com/uploads/1/3/0/9/130969904/7005201.pdf
    • http://files.beautiful-feet.org/uploads/1/3/1/4/131437563/2034620.pdf
    • https://cdn.shopify.com/s/files/1/0450/6284/8664/files/lista_remota_m3u_2018.pdf
    • https://cdn.shopify.com/s/files/1/0437/6828/3298/files/alberta_budget_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/dujijitaronefijor.pdf
    • https://cdn.shopify.com/s/files/1/0438/0635/9714/files/72987745563.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/41907875313.pdf
    • https://cdn.shopify.com/s/files/1/0428/1873/2191/files/46328800195.pdf
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/zebiterel.pdf
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/combine_png_to.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2138/files/fl_studio_12_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/laminar_flow_equipment.pdf
    • https://cdn.shopify.com/s/files/1/0431/9599/0175/files/surizuvivaloxaruv.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_off00006c66.bin
cbc7d34a3308506394584e6c62b4b1be093af9faa21ef263d4270eadc0a0c5ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C66 5564 bytes
font_01_sfnt_off00007f42.bin
629942628f7d226379eb58dd885a487f7d3c45e499a994ecaa0765c9b51302a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F42 10936 bytes

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