Malicious PDF — malware analysis report

Static analysis result for SHA-256 3daea720bb2cae74…

MALICIOUS

PDF

68.3 KB Created: 2020-08-30 23:19:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f4db8ff438fa5ff4748cc7339ea739b SHA-1: ead080abc0407988fb777f98f8d3572a7afa5fd3 SHA-256: 3daea720bb2cae74e2e95de264ed49d9b1479e512fb79e5222e09560b7b6e294
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One of these links, 'https://ttraff.ru/wix?keyword=arm7+microcontroller+pdf', is flagged as malicious, indicating a likely redirection to a harmful site. The presence of many links, including the malicious one, suggests an attempt to lure users into clicking through to potentially compromised destinations.

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.ru/wix?keyword=arm7+microcontroller+pdf
    • https://static.usrfiles.com/ugd/930050_0160d13b3f694cf39b7beafe63d545cd.pdf
    • https://static.usrfiles.com/ugd/585b1d_3fcd61cd493c4ff984bd7ec47013b35b.pdf
    • https://static.usrfiles.com/ugd/b8c837_6690fb169f5d4519ae7e6e9a55f3cb58.pdf
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/jhin_build_guide_season_8.pdf
    • https://cdn.shopify.com/s/files/1/0432/7525/5972/files/xosawav.pdf
    • https://cdn.shopify.com/s/files/1/0434/4712/4130/files/mosoxulirate.pdf
    • https://cdn.shopify.com/s/files/1/0438/9113/0536/files/gegupebanisevefuworonat.pdf
    • https://cdn.shopify.com/s/files/1/0448/1184/5793/files/afcat_syllabus_for_technical_branch.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/78427492650.pdf
    • https://cdn.shopify.com/s/files/1/0439/2180/1371/files/choke_canyon_fishing_report.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c8ef90836e44f9cbfe21057f7cca750.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7bd322d462846029e28b47c62fb6ed6.pdf
    • https://static.usrfiles.com/ugd/e2f7e1_38887dd5892e4a5a991253e8c497482d.pdf
    • https://static.usrfiles.com/ugd/8b2c09_6b4a641169ef4d7383935b0567684368.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_off0000b02f.bin
bb2da173ce1ad3cd1c2def52d7aed9ec8a290977a93447e1a21db5a34999c0ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB02F 9724 bytes
font_01_sfnt_off0000cf76.bin
0fda564d950ff39c927a528eeb388c1e51510fbee375cf87c3b03a8acfe6c5cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF76 4984 bytes
font_02_sfnt_off0000e051.bin
372c8e05ad2ad9bfa99da9c48b27168567f67a1e3aee0bdeb417cf3a265b808c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE051 10356 bytes

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