Malicious PDF — malware analysis report

Static analysis result for SHA-256 39e0f1ea0c864ecb…

MALICIOUS

PDF

79.3 KB Created: 2020-08-29 02:50:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bac5392c4a90622c7e6ba67eb373cd9 SHA-1: 1fa2005546c75f002b6688ae380068dd3bd32361 SHA-256: 39e0f1ea0c864ecb86bb70211e753e327034b83d6867696d831446c65eb50c0d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=principales+fallas+en+circuitos+electronicos'. The document body, though heavily obfuscated, contains this same URL, suggesting the document's primary purpose is to redirect users to this malicious site. The file also exhibits characteristics of a link farm, with numerous external PDF links, further supporting the redirection attack pattern.

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.cc/wix?keyword=principales+fallas+en+circuitos+electronicos
    • https://static.usrfiles.com/ugd/b8c837_3b3ea172b5c2452ca0f08364a1105733.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b0802ceeb5943a8aaa651290dabf73b.pdf
    • https://static.usrfiles.com/ugd/b8c837_9757a9fd410f454e90d91bf7c36e36fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_7649132ef5904122b1299c1e52f472a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_73c3feb5774a4625a0513c9c1c281488.pdf
    • https://cdn.shopify.com/s/files/1/0433/1362/7294/files/globalisasi_dalam_hubungan_internasional.pdf
    • https://cdn.shopify.com/s/files/1/0430/8228/5216/files/right_foot_valgus_deformity_icd_10.pdf
    • https://cdn.shopify.com/s/files/1/0462/5937/2183/files/xefolalepi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/24917782064.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/rajinokeserinerunurodo.pdf
    • https://static.usrfiles.com/ugd/b8c837_6580a7c862b0427c98b99a42a432d154.pdf
    • https://static.usrfiles.com/ugd/b8c837_24ede20650a348659a7f1e479947ac59.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d46246278af41a0b8c48b5e2f54b59c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca8b31c9d3a34512a3594702ac7bedb0.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc9393871d7c427e87de3f48df214553.pdf
    • https://static.usrfiles.com/ugd/b8c837_afc8f188e4a548d1bacb7fcad7aeffd4.pdf
    • https://static.usrfiles.com/ugd/b8c837_27a585d233e94e27a2dc28e0bd69e478.pdf
    • https://static.usrfiles.com/ugd/b8c837_4fe9ca3e4ebf4cb6be6b9aff8f9824a2.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df3b.bin
1b641a21da1baa72ffad8e1f0a0a2bb40295d69f06f4429fbf81f9d91faf5ab3
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3B 5008 bytes
font_01_sfnt_off0000f046.bin
c7549588070ce02efbd84384c951a61a0a2933c7f15d99c300b358cda305d8d6
pdf-font-stream PDF embedded font (sfnt) at offset 0xF046 12488 bytes
font_02_sfnt_off00011844.bin
d1dc95b0e8bbe24ea4fe421922b966938a53cbf279330fe4f51e3d08919df969
pdf-font-stream PDF embedded font (sfnt) at offset 0x11844 16148 bytes