Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d32ef85c8c8abf9…

MALICIOUS

PDF

44.0 KB Created: 2020-08-21 04:55:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 842b4a27768629660fb54bbdc6d35e89 SHA-1: cc33fcc877299b2edd60f3d55206314326936d02 SHA-256: 7d32ef85c8c8abf9674dc998ec5dff833302c0ee823075a9e8c83d3e861e5c32
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, forming a link farm. One of the primary links, https://ttraff.ru/pify?keyword=la+la+la+song+free++320kbps, is identified as a malicious redirector. The document body contains garbled text along with the primary malicious URL, suggesting it is a lure to redirect users to malicious content.

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.ru/pify?keyword=la+la+la+song+free++320kbps
    • http://files.bourgeondelavande.com/uploads/1/3/1/6/131637553/ledabuwewab.pdf
    • http://files.mintaddition.co.uk/uploads/1/3/1/0/131071166/juguz-gokupolabu-redaweb.pdf
    • http://files.holistichealthmankato.com/uploads/1/3/0/7/130775071/85d60a3cf6.pdf
    • http://files.slhschoirs.com/uploads/1/3/1/4/131437648/juwuvewizedumiwibi.pdf
    • http://kidikane.swlar.com/uploads/1/3/0/7/130739845/mejadeg.pdf
    • https://cdn.shopify.com/s/files/1/0437/5969/8077/files/42762307732.pdf
    • https://cdn.shopify.com/s/files/1/0434/7595/9973/files/positive_adjectives_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6733015585.pdf
    • https://cdn.shopify.com/s/files/1/0432/4392/9762/files/59009971934.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9446/files/ext_glicol_calendula.pdf
    • https://cdn.shopify.com/s/files/1/0460/5752/1307/files/clarinet_arpeggios.pdf
    • https://cdn.shopify.com/s/files/1/0431/0240/4769/files/selejibo.pdf
    • https://cdn.shopify.com/s/files/1/0450/2798/3510/files/metered_dose_inhaler.pdf
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/the_wonderful_wizard_of_oz_original_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/65748431223.pdf
    • https://cdn.shopify.com/s/files/1/0431/8078/5823/files/12599444323.pdf
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/33896844775.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_off00005bf3.bin
80ccd6b66e982e009e83ba73f3646e859ed6549aaf0cfe34461a9e9bc82f65ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF3 5652 bytes
font_01_sfnt_off00006f40.bin
f974eded7ea4bf5a68c51908d267d5d2cb8e2e88d4d3e7a2ac30bb567763182c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F40 17748 bytes

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