Malicious PDF — malware analysis report

Static analysis result for SHA-256 50f1cbb0d279b6fa…

MALICIOUS

PDF

39.4 KB Created: 2020-08-19 15:59:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b6b7c45a6e6fb79523a348ba601f95f SHA-1: 64d09a1ec6bc4762c7bb0f27bf66b78ceda6b763 SHA-256: 50f1cbb0d279b6fa807c9e05842719ad371321d50a4bfaff05924fa953482c13
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=rice+vermicelli+noodles+nutrition+information. While the document body is heavily obfuscated, the presence of numerous links, including the malicious one, suggests a phishing or redirection attempt to a malicious site.

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=rice+vermicelli+noodles+nutrition+information
    • http://files.mysteifflife.com/uploads/1/3/1/4/131437378/5899595.pdf
    • http://pavaja.lachozaspa.com/uploads/1/3/1/3/131382486/pomeperakawewez.pdf
    • https://cdn.shopify.com/s/files/1/0451/9470/7095/files/geguzebajebanidez.pdf
    • https://cdn.shopify.com/s/files/1/0436/7283/0105/files/what_is_lovemp3.pdf
    • https://cdn.shopify.com/s/files/1/0429/6366/5062/files/59292716015.pdf
    • https://cdn.shopify.com/s/files/1/0432/7938/4734/files/63869866974.pdf
    • https://cdn.shopify.com/s/files/1/0434/2710/2887/files/bible_commentary_on_the_book_of_romans.pdf
    • https://cdn.shopify.com/s/files/1/0428/3547/6636/files/meramec_caverns_zip_lines.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53059057271.pdf
    • https://cdn.shopify.com/s/files/1/0434/6209/9109/files/largest_city_in_iowa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5095/0041/files/76440122325.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3845/files/wofaziwakoxejenidipukiwet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/folidefam.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_off00005bc1.bin
ecc8ea6aa3c43ee2dbe3f1b3ef37773b4b52cb07d235794ddaa35b760fbf99a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC1 5232 bytes
font_01_sfnt_off00006d79.bin
a3a5bde49964a0ddd57c55a28474604d00b7fe1ffe6cb72fee13694657bf7b9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D79 10316 bytes

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