Malicious PDF — malware analysis report

Static analysis result for SHA-256 93014c90f5e99852…

MALICIOUS

PDF

39.9 KB Created: 2020-08-21 10:43:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7493636d49f70a903790d19351b577cb SHA-1: 7e61bcf1910ca80101cb8a712b036751a95b37ac SHA-256: 93014c90f5e99852f25c138548d4db1cb3c492b9da1e8cbf62939dd117988c26
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with one link pointing to a known malicious redirector. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=baby+song+tamil+audio', which is likely intended to trick the user into clicking it. The PDF structure and the presence of numerous links suggest a delivery mechanism for further malicious content.

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/pify?keyword=baby+song+tamil+audio
    • http://ruzalosem.doitallpressionals.com/uploads/1/3/2/8/132814930/1496720.pdf
    • http://files.barehandcreations.com/uploads/1/3/0/8/130814286/deserobifo_papevifi_soresovokabop_ragida.pdf
    • http://wepitaj.thc709.ca/uploads/1/3/1/4/131437949/nafozitujigevel.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/56159287592.pdf
    • https://cdn.shopify.com/s/files/1/0429/9735/0554/files/vimukedomalirolep.pdf
    • https://cdn.shopify.com/s/files/1/0431/0541/9418/files/80508091067.pdf
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/wezawadazajela.pdf
    • https://cdn.shopify.com/s/files/1/0440/0077/2246/files/misujelu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6389/2375/files/essential_words_for_the_ielts_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/2032941407.pdf
    • https://cdn.shopify.com/s/files/1/0431/9041/9620/files/25041868990.pdf
    • https://cdn.shopify.com/s/files/1/0432/3491/8558/files/1831951833.pdf
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/agricultural_biochemistry_download.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_off00004acf.bin
050c22e6b2ae597813fea85d8f5488472dcdda98c1183f96205c03fe9faa5e3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ACF 5340 bytes
font_01_sfnt_off00005cdc.bin
08d997fe53dfd93c23f01a20b12619d8422ab24785079c6ea472ccfa3c96bc24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDC 2400 bytes
font_02_sfnt_off00006729.bin
12120a2e184e68f4320b2dac241e7b51fc305792eecae9b35d06e6cb076cac75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6729 13848 bytes

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