Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb698d8068590f4…

MALICIOUS

PDF

53.5 KB Created: 2020-07-23 14:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe3878cc7a5d7e05a4077037f3f8a394 SHA-1: 70acd42085fce830849fba3895d27845e75fae1b SHA-256: ccb698d8068590f4751909b53a6d35545970293eff52384654e7cd3c51a48323
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious websites. One of the primary URLs, ttraff.com, is flagged as a malicious redirector. While the document body contains garbled text, the heuristic firings strongly indicate a malicious intent related to link distribution.

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=arrhenatherum+elatius+bl%25C3%25BCtenformel
    • http://files.chilimacshack.com/uploads/1/3/1/4/131438003/waleba-nubuvuxu-xozexofetexonod.pdf
    • http://files.empowerptandwellness.com/uploads/1/3/1/8/131857270/sivefesu.pdf
    • http://files.stjolin.com/uploads/1/3/0/7/130775668/6f41ee5894.pdf
    • http://files.hecklerancestry.com/uploads/1/3/1/6/131636689/gikigosufif.pdf
    • https://cdn.shopify.com/s/files/1/0432/0608/2717/files/27663156096.pdf
    • https://cdn.shopify.com/s/files/1/0432/8020/3944/files/vesebamileniwofepomone.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9529/files/973345145.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/waronujaxawakibakatoza.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/pevipiwarutedet.pdf
    • https://cdn.shopify.com/s/files/1/0436/9167/1705/files/22734118973.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70745323757.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98012128422.pdf
    • https://cdn.shopify.com/s/files/1/0434/2992/0930/files/75773741892.pdf
    • https://cdn.shopify.com/s/files/1/0431/6125/6091/files/xijifikukopasexidijerifog.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.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_off00008eb7.bin
85b0dd21d443a0d94b96a2bda97094f694cd49f995ba5ad65ad59b04eabd0dcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB7 5140 bytes
font_01_sfnt_off00009fc1.bin
7539e46a9c516009a971a9a63313ba01133ed48c47909451013e7f365b613f6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FC1 11868 bytes

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