Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f59ee31c4650aab…

MALICIOUS

PDF

45.4 KB Created: 2020-08-18 16:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77600e6b16dfa4509bd3c42212eb2cf4 SHA-1: e2ee45a8eac948106a17f6f1bce8f57922c9229c SHA-256: 3f59ee31c4650aabfc56e08a81c2253a0c68c18974ec198e454ef0e74fd3f86f
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to potentially malicious redirectors. The document body text, though heavily obfuscated, contains a URL that appears to be a lure for a job description. This URL, https://ttraff.com/pify?keyword=administrative+coordinator+job+description+template, redirects to other infrastructure, indicating a phishing or social engineering attempt.

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=administrative+coordinator+job+description+template
    • http://rulapagun.rlx.space/uploads/1/3/1/3/131380600/setedofafa-bupirik.pdf
    • http://files.foreraclothing.com/uploads/1/3/1/4/131454482/6990391.pdf
    • http://files.musiccountsincanton.org/uploads/1/3/1/4/131408465/f511869c0.pdf
    • http://files.hidayatashila.com/uploads/1/3/1/3/131379085/4780627.pdf
    • https://cdn.shopify.com/s/files/1/0434/3585/1928/files/71786051327.pdf
    • https://cdn.shopify.com/s/files/1/0439/7786/7422/files/jijejesivikasoziwosegiweb.pdf
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/74330703489.pdf
    • https://cdn.shopify.com/s/files/1/0433/5760/1943/files/mivujijebe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6488/files/tokigitigejedovefoniruk.pdf
    • https://cdn.shopify.com/s/files/1/0432/1037/5325/files/18858867360.pdf
    • https://cdn.shopify.com/s/files/1/0431/9114/0510/files/maruzizavumorumoseko.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/41056399846.pdf
    • https://cdn.shopify.com/s/files/1/0432/7732/0348/files/34611492897.pdf
    • https://cdn.shopify.com/s/files/1/0431/6558/1468/files/attaches_the_lens_to_the_ciliary_body.pdf
    • https://cdn.shopify.com/s/files/1/0436/1935/2740/files/boundary_element_method_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/8152/1560/files/30499109129.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/57896237180.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_off00007275.bin
9133e89f3c8229b761649c2faa8297a47581b230a8c12aa2fd4e1b8038a5f365		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7275 5484 bytes
font_01_sfnt_off000084fc.bin
f37724b424437a8041a2041945488fed3e5240e72899b18e0bc7476d2409dac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84FC 10356 bytes

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