Malicious PDF — malware analysis report

Static analysis result for SHA-256 e87890ecae64498c…

MALICIOUS

PDF

37.0 KB Created: 2020-08-29 04:22:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53ae97cfef8532ea1e2b97bffdb413ce SHA-1: aa28a294e18a1568a08f52ad0a11e8bd49d70df7 SHA-256: e87890ecae64498cac4a8e3f67b60030f5bdfa8571e240040d704de2fe9018fb
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of embedded links, indicating a link farm strategy. The primary malicious URL identified is ttraff.com, which is likely used to redirect users to a malicious destination. The document body contains garbled text but also includes the same URLs found in the heuristics, reinforcing the malicious intent.

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/wix?keyword=tabla+periodica+sin+llenar
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/13020331488.pdf
    • https://cdn.shopify.com/s/files/1/0437/7827/7527/files/vocabulary_personality_adjectives_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/7863/1072/files/89574132315.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9588/files/49222486537.pdf
    • https://static.usrfiles.com/ugd/b8c837_5404fdac63b843aea2ad5f52b0b64019.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a39c6296bda4a19bf40b2d4a636c05f.pdf
    • https://cdn.shopify.com/s/files/1/0431/6548/3168/files/traduction_anglais_franais_fichier_en_ligne.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86187089948.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/44043289058.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7cec49b4fec4cb78eac6eeaf479df11.pdf
    • https://static.usrfiles.com/ugd/b8c837_3f859ae14ad842668a2045c447be4da2.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_off000051b4.bin
eb7e6116b475a46eeaa008607af12f122cb99a1fc547ebfa21ced9cfb6684f56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51B4 5156 bytes
font_01_sfnt_off00006340.bin
01f34dee3da73fa76df812c4bd41cbc66b4a3302a3e689578554939ae66dd738		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6340 10720 bytes

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