Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea043afbc762d043…

MALICIOUS

PDF

41.8 KB Created: 2020-08-10 22:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66cb833af1aeba738990e74bea55f70a SHA-1: cfefba0d8962ca0c1d5dc085b5451cf92d5f9b7f SHA-256: ea043afbc762d043504c1f91b0229beb41a7cf03e8c2b119e354b042ecabc250
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDFs, a technique often used for SEO poisoning or to obscure malicious destinations. One critical heuristic identified a link to known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=the+encyclopedia+of+ancient+egyptian+architecture+pdf`. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The file's purpose appears to be directing users to malicious content via this link.

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.cc/pify?keyword=the+encyclopedia+of+ancient+egyptian+architecture+pdf
    • http://files.thepitchthemovie.com/uploads/1/3/1/4/131437657/potiku_xanuno_jupujivunep_vafilodikobo.pdf
    • http://files.hramusicwest.org/uploads/1/3/1/6/131606984/1103597.pdf
    • http://files.counseling4less.com/uploads/1/3/1/4/131406663/8e015fc6.pdf
    • http://files.yogawithieva.com/uploads/1/3/0/9/130969809/0982abf33b888.pdf
    • https://cdn.shopify.com/s/files/1/0434/1035/8439/files/sidelorigad.pdf
    • https://cdn.shopify.com/s/files/1/0437/7598/3778/files/titukiviwugisemuwuzez.pdf
    • https://cdn.shopify.com/s/files/1/0431/4329/9234/files/tobunavazewevasode.pdf
    • https://cdn.shopify.com/s/files/1/0440/5939/4213/files/xisoridoxuzedi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2839/7727/files/england_flag_2015.pdf
    • https://cdn.shopify.com/s/files/1/0434/9096/7714/files/aashiqui_2_all_songs_lyrics_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4020/2142/files/94455318041.pdf
    • https://cdn.shopify.com/s/files/1/0440/2806/7990/files/61063744085.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/blockscad_tutorial_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0435/5588/1115/files/definicion_de_cualidades_fisicas.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/65656521928.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_off0000665e.bin
6afd6a74da22b30c662eeb155cd5cc903e1db294088f59e7c794df89b4b934af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x665E 5292 bytes
font_01_sfnt_off00007857.bin
2294b4ec7848c044ced445201acf7faed92f3af45585ff169907ed32c864c06a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7857 9752 bytes

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