Malicious PDF — malware analysis report

Static analysis result for SHA-256 29c534570a73ecf6…

MALICIOUS

PDF

37.0 KB Created: 2020-08-16 22:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53882fb99e47551bde29ac37d6a865d5 SHA-1: a490e6b2e4b5cf50c8f723be5409121d4dd2b329 SHA-256: 29c534570a73ecf66c4efa0ce5cb3159a59b9d7798a2ae98905e51c6eedf586f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though partially obfuscated, includes the text '9. 2 binary ionic compounds worksheet answers' and the malicious URL, suggesting a lure to disguise the malicious intent. The primary attack pattern involves tricking the user into clicking a link that leads to malicious infrastructure.

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=9.+2+binary+ionic+compounds+worksheet+answers
    • http://files.fitwoofitness.com/uploads/1/3/1/0/131070849/7796017.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/musuvagexas.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/16536725220.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/fur_elise_wav.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/xenonovalusumomem.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/non_proportional_graphs_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0436/9930/6648/files/74894355718.pdf
    • https://cdn.shopify.com/s/files/1/0429/6146/9599/files/vatosametojuwijebize.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/70881408076.pdf
    • https://cdn.shopify.com/s/files/1/0431/6577/8076/files/dunisijowonupaxori.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/88545532950.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_off0000492a.bin
0a7e3ff03412af6374623fea4a9028be74eaa2271e24a9f7661b69268c734c0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x492A 5904 bytes
font_01_sfnt_off00005d1d.bin
7e7023aa37ab02d6a91b14c219ea0a6181012d79de96e07844017fef067297e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1D 13692 bytes

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