Malicious PDF — malware analysis report

Static analysis result for SHA-256 d981845608583ffa…

MALICIOUS

PDF

41.5 KB Created: 2020-07-30 11:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93ae6c8b0b0f397364a3cb17fb5f4cdd SHA-1: b8f8763f3dec077869e1f547a45986c35614ed83 SHA-256: d981845608583ffa1dd823b212784d40d36d04db14e0bcffd51191ff617ed3c6
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This URL is presented within the document body, disguised as a recipe. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is likely intended to redirect the user to a phishing page or a site hosting further 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=recette+aperitif+dinatoire+thermomix+pdf
    • http://files.freiheitmag.com/uploads/1/3/2/6/132682134/5319687.pdf
    • http://files.ashleymartinportfolio.com/uploads/1/3/2/7/132712614/3893206.pdf
    • http://files.northernbcreining.com/uploads/1/3/1/0/131070842/f8451774.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/85173411717.pdf
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/11373814316.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/kuwopesamefutulopim.pdf
    • https://cdn.shopify.com/s/files/1/0435/8674/8579/files/97473528486.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/jowedoniwagup.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1562/files/pizizovekazadaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/33846254581.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudogezemolajefenupil.pdf
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/43967012634.pdf
    • https://cdn.shopify.com/s/files/1/0433/7614/8638/files/vodimaworekiligofatuse.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/
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/jowedoniwa

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000644e.bin
b3354978fb2f257b96a9d5756f0934649e1794efc6de1b339d50506bd0c2ab0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x644E 5048 bytes
font_01_sfnt_off0000754a.bin
e9d17a1259680c763174642564b9b343b0c8a7c6619551f7e36ded8c88a9b4d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x754A 10392 bytes

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