Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b52213f17a7b40b…

MALICIOUS

PDF

43.9 KB Created: 2020-08-06 01:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 947a0345b6baedb7b3cc3c5e8256249a SHA-1: 81cad4c1095d47c0e98ef7328382708d4f1788d4 SHA-256: 1b52213f17a7b40b90bf01c1825b62783db1ed273a6e3a90a353f80a256fb5dd
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=bticino+living+now+prezzi+pdf. Another heuristic identified a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The document body contains garbled text but includes the malicious URL and references to PDF files.

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=bticino+living+now+prezzi+pdf
    • http://files.pugsleydigitalmarketing.com/uploads/1/3/2/6/132695651/xukuserowireda_jaxojezinere_lirewori_fanupagimejoxa.pdf
    • http://files.claire-crafts.com/uploads/1/3/0/7/130776590/51d5fcbb5.pdf
    • http://files.westfielddentalpa.com/uploads/1/3/2/7/132741052/sesuxe.pdf
    • http://files.abridgetoenglish.com/uploads/1/3/0/7/130740175/tijezejife.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/nosoludoguvuvoserurigeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/46951149707.pdf
    • https://cdn.shopify.com/s/files/1/0427/8507/9452/files/zapiwajobinulozimizatob.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6863/files/galaxy_tab_s2_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/3434/5625/files/motorcycle_mechanic_books.pdf
    • https://cdn.shopify.com/s/files/1/0437/8460/1752/files/nakutopanu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1030/0831/files/pro_webcam_hack_v_1._0.pdf
    • https://cdn.shopify.com/s/files/1/0436/8164/4697/files/36447729634.pdf
    • https://cdn.shopify.com/s/files/1/0432/7093/0600/files/visuwotiwawiwibifetex.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2739/files/68400470239.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/zilaguf.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_off0000642a.bin
0e0e66d61035613f37e348b8f2c6209b3992b7049f421c2d7d5b32741839f9e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x642A 5188 bytes
font_01_sfnt_off0000760a.bin
291376e02aea4baf2c5aefd01d5e49989b44d337eb7d7f9b82d7c11df118311b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x760A 13948 bytes

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