Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0fd67ffaef4e29d…

MALICIOUS

PDF

48.4 KB Created: 2020-08-19 18:19:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d31c290fb8e2f1aa25d2b3ff4ce728a4 SHA-1: 40e71d5868bef1a3686eb12744475a3642946f8b SHA-256: f0fd67ffaef4e29d832c15454593df64842e7575884b7d01d32a72019d6f3925
160 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains text related to 'admission form' and the malicious URL, suggesting a lure. The presence of a visible LOLBin command execution instruction further indicates malicious intent, likely to execute a payload or redirect the user to a harmful site.

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.ru/pify?keyword=cmd+college+bilaspur+admission+form+2019
    • http://zuluboka.timothygabrielmusic.com/uploads/1/3/1/3/131379803/gobegakawumob.pdf
    • http://zekivete.allenpc.org/uploads/1/3/0/8/130874207/7429422.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdf
    • https://cdn.shopify.com/s/files/1/0435/6322/1155/files/allegiant_veronica.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/kufirosurosi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9200/1433/files/game_call_of_duty_android_apk_obb.pdf
    • https://cdn.shopify.com/s/files/1/0434/2166/3397/files/fusuvodejad.pdf
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/archimate_specification_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/1431/5422/files/xakebideva.pdf
    • https://cdn.shopify.com/s/files/1/0428/7086/6087/files/85162907507.pdf
    • https://cdn.shopify.com/s/files/1/0431/9933/2512/files/toturutad.pdf
    • https://cdn.shopify.com/s/files/1/0429/5586/6263/files/dosozibeviboko.pdf
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/46349326827.pdf
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/pozamirunujafuzidikolovu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5757/files/zedulilexibetula.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_off00006606.bin
47086c681936366f2f9b03230d5376ec38107c637bd6100729a3cfc150e395ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x6606 6004 bytes
font_01_sfnt_off00007a5a.bin
f78aa6e4396dd9fb7cce558330eaa80da7cdc507fdb9ff0879986d9eefc2a27f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5A 10680 bytes
font_02_sfnt_off00009f10.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F10 16164 bytes