Malicious PDF — malware analysis report

Static analysis result for SHA-256 89178e73bb5b033a…

MALICIOUS

PDF

47.5 KB Created: 2020-08-15 07:31:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 942416046c6d221af8996efc74e7d08e SHA-1: 2bf85ce03550c6b704ab8bbeb8157f95077e8dee SHA-256: 89178e73bb5b033a8d22994e658572ba68f4d940cfe953fc3c02a4505783aac7
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=nightmare+before+christmas+live+wallpaper'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous links to other PDF documents, many of which are hosted on cdn.shopify.com and other domains. The document body contains garbled text but also includes the malicious URL and several benign-looking PDF links, suggesting a lure to disguise the malicious redirector.

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=nightmare+before+christmas+live+wallpaper
    • http://bexewigaj.rocktownrallies.org/uploads/1/3/2/7/132741024/sotarud.pdf
    • http://files.rajadiveisland.com/uploads/1/3/0/7/130738596/pinete.pdf
    • http://files.larryssportsexchange.com/uploads/1/3/0/8/130874128/folerezome.pdf
    • http://files.shackboldon.com/uploads/1/3/1/0/131069879/gomito.pdf
    • https://cdn.shopify.com/s/files/1/0433/4354/4488/files/mozart_alleluia_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/2306996892.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/atahualpa_yupanqui_guitarra.pdf
    • https://cdn.shopify.com/s/files/1/0434/7589/4437/files/midibizekal.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/45330646972.pdf
    • https://cdn.shopify.com/s/files/1/0431/1462/7223/files/shingles_vaccine_cdc_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/minecraft_missile_wars_servers.pdf
    • https://cdn.shopify.com/s/files/1/0438/1900/8160/files/salofolalitemufa.pdf
    • https://cdn.shopify.com/s/files/1/0435/1823/0688/files/takofog.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5784/files/37323330804.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0434/7923/6774/files/kirby_vacuum_repair_manual.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_off00006dc1.bin
765a1664f5baaa88b6ef0da245d03a067c16c123a35402f2a29ce90137253760
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC1 5372 bytes
font_01_sfnt_off0000801d.bin
34801b8691230b06b41be409e881d1e0aecc77f9dd9c7feaf91eb6d65a7f706d
pdf-font-stream PDF embedded font (sfnt) at offset 0x801D 10120 bytes
font_02_sfnt_off0000a2c6.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C6 4324 bytes