Malicious PDF — malware analysis report

Static analysis result for SHA-256 9acdc4c68617fad5…

MALICIOUS

PDF

41.4 KB Created: 2020-08-08 21:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d2d49a8743ea3d9ba4a4926d27902ce SHA-1: a1d0efd7151828d1d687e913a32d388667252a40 SHA-256: 9acdc4c68617fad571cf75c1bea62741f4982698043201471fb9f7c6255a69b0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.com/pify?keyword=all+c+functions+pdf, is identified as a malicious redirector. This suggests the document is designed to trick users into visiting malicious sites by disguising them as legitimate file downloads. No scripts were extracted, and the document body was heavily obfuscated.

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=all+c+functions+pdf
    • http://files.angiecoyle.com/uploads/1/3/1/6/131606169/0329169d16a2.pdf
    • http://files.mostlymaille.com/uploads/1/3/2/6/132695867/pazidugifatutezexu.pdf
    • http://tatusop.thecarolinacanineranch.com/uploads/1/3/1/4/131483281/netuf-jijapikofep-vipefijulegit.pdf
    • https://cdn.shopify.com/s/files/1/0436/4438/7481/files/download_nuance_power_standard.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53940500656.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/html_input_disable_autocomplete.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/vinudenasogidilejer.pdf
    • https://cdn.shopify.com/s/files/1/0432/0627/9323/files/because_of_who_you_are_piano_chords.pdf
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/mideramodetolu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/siravowojojugasele.pdf
    • https://cdn.shopify.com/s/files/1/0436/0326/3645/files/kivugakuwolenako.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/tozinoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6828/4319/files/environmental_biophysics.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/15489324552.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5687/files/93839857272.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_off000062d0.bin
f3fa9704aa8461ae027a653d9d2bde6bbd31d92b110d5bfd965d0933f6c8ca9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62D0 4832 bytes
font_01_sfnt_off00007360.bin
f8e20b4abdc001826e483db0ffd7b824c2e904a2e36303e3a928a1fe21a70baa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7360 11364 bytes

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