Malicious PDF — malware analysis report

Static analysis result for SHA-256 de809f3936c94497…

MALICIOUS

PDF

41.6 KB Created: 2020-08-23 19:48:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dbbf9949e35d0566b444366af4485c4 SHA-1: ad07db4fc4593aa18d281b23068c07f8b4bc4225 SHA-256: de809f3936c9449763e041f2abe5d8ef684fffb0ded43032360381a12ace9e25
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm. One of the primary links, 'https://ttraff.cc/pify?keyword=karaoke+canzoni+italiane++gratis', redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to karaoke and the malicious URL, suggesting a lure to trick users into visiting potentially harmful sites. No scripts were extracted, and the primary malicious activity appears to be the redirection to external malicious URLs.

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.cc/pify?keyword=karaoke+canzoni+italiane++gratis
    • http://files.newlightfellowship.com/uploads/1/3/2/6/132695213/cfb8f7e486f92f.pdf
    • http://files.unityrecordingstudio.com/uploads/1/3/1/8/131856950/980320.pdf
    • http://files.southernappalachianworkcenter.org/uploads/1/3/1/3/131379362/f339b6.pdf
    • http://files.karamarie.org/uploads/1/3/2/8/132815084/9297620.pdf
    • http://zipejisuk.richmondbulldogs.org/uploads/1/3/1/4/131438110/d5edfa380.pdf
    • https://cdn.shopify.com/s/files/1/0431/4926/3004/files/dimixewawigopokupawikusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7068/files/polaris_trail_boss_250_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/zazebewufanedimilibaxuda.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8815/files/polaris_snowmobile_service_manual_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/5929/0022/files/dexizewibogafuwe.pdf
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/mini_international_neuropsychiatric_interview_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0432/9350/7739/files/70372752375.pdf
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/51008610667.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1550/files/pokemon_mystery_dungeon_explorers_of_darkness_rom.pdf
    • https://cdn.shopify.com/s/files/1/0432/1083/4077/files/77003609815.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_off0000582c.bin
c48b24e4f7f4a44ae1f749f27abd8dec024c71cdb0be9943ac0d17b22e6b1d9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x582C 4840 bytes
font_01_sfnt_off000068b5.bin
a0ff7741d0197d4b3384f2ffb8442dfb79d7e310f5e24f9ece3ac4a3739b9e21
pdf-font-stream PDF embedded font (sfnt) at offset 0x68B5 10612 bytes
font_02_sfnt_off00008b78.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B78 4324 bytes