Malicious PDF — malware analysis report

Static analysis result for SHA-256 c15447d49caee883…

MALICIOUS

PDF

57.8 KB Created: 2020-08-10 19:58:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69ec20afb257ca59c43024ceea98fb89 SHA-1: 8325bc5ed6faae476d912b42a824e45c7873867f SHA-256: c15447d49caee883793fd1b9d9e946038a829e7e9cab115bc8b352a765667cac
160 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'https://ttraff.cc/pify?keyword=ilmu+tasawuf+imam+ghazali+pdf'. This indicates a phishing or scam attempt to lure users to a malicious site. The PDF also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, as flagged by PDF_SEO_LINK_FARM. The presence of visible command execution instructions, noted by SE_LOLBIN_RUN_COMMAND, further suggests malicious intent, likely to execute further stages of an attack.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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/pify?keyword=ilmu+tasawuf+imam+ghazali+pdf
    • http://files.dollupwithteacups.com/uploads/1/3/1/4/131453843/a214be92e.pdf
    • http://lewadofu.curleyscience.com/uploads/1/3/1/4/131437987/6629472.pdf
    • http://files.chrissieparker.com/uploads/1/3/1/3/131379402/318184.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6614/files/quartz_crystal_thickness_monitor.pdf
    • https://cdn.shopify.com/s/files/1/0430/5082/7929/files/57891946011.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kulabegidubonigupux.pdf
    • https://cdn.shopify.com/s/files/1/0432/8374/2884/files/65993940200.pdf
    • https://cdn.shopify.com/s/files/1/0429/0212/6751/files/siwotu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8917749958.pdf
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/nosafupomudivewegafa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/85390344773.pdf
    • https://cdn.shopify.com/s/files/1/0434/9627/6128/files/62909838141.pdf
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/21303482308.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/7996/files/scope_and_functions_of_human_resource_management.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
stream_005_off0000abd9.bin
4f719091ba3841766284974c06d8acdf3444bbf28b6fbc3e16aa888d906e91a8
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xABD9 26204 bytes
font_00_sfnt_off0000759d.bin
8db22396d2acc993b0716e71ba877e79e1c24ee4141a8a7e8409bff4cba98aa0
pdf-font-stream PDF embedded font (sfnt) at offset 0x759D 5436 bytes
font_01_sfnt_off00008819.bin
a41955074738b0dcf9dc99713570ff7c81655a7c66b646a46f418d09fc5b22f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8819 10552 bytes