Malicious PDF — malware analysis report

Static analysis result for SHA-256 c930310c1c18b02d…

MALICIOUS

PDF

51.1 KB Created: 2020-08-06 19:22:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa182eb1aed156a5b867b4e694856ff2 SHA-1: 73cc6e50192e477782ee679726d90c8ec92e3fd1 SHA-256: c930310c1c18b02d8fd5b04c5c94ab86e8b051f8542018abe79bea8f938172c9
200 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external links, suggesting a link farm or SEO poisoning tactic. The document body and heuristics indicate a lure for a password-protected archive and a remote support tool, likely to trick the user into downloading and opening a malicious payload. The primary malicious URL identified is https://ttraff.com/pify?keyword=baixar+aplicativo+pdf+para+pc+gratis.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.com/pify?keyword=baixar+aplicativo+pdf+para+pc+gratis
    • http://files.pagingoceanside.com/uploads/1/3/2/7/132741144/4404354.pdf
    • http://files.musicworksnyc.org/uploads/1/3/0/8/130874493/1060924.pdf
    • http://tewejuva.tactdrama.com/uploads/1/3/0/9/130969551/8834303.pdf
    • http://files.thepurpleturtleworkshops.com/uploads/1/3/0/7/130776016/kakebulan_gakexup_bitixijigevudog.pdf
    • http://files.talks.ccsdtitle1.org/uploads/1/3/1/6/131637402/4df15f0.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6329/files/mathita_dvd_ram.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/19399700193.pdf
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/34374890486.pdf
    • https://cdn.shopify.com/s/files/1/0433/3862/9288/files/sogujof.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/domexu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/alteraciones_del_metabolismo_de_carbohidratos.pdf
    • https://cdn.shopify.com/s/files/1/0429/4914/8838/files/86120074114.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/1996_ford_f150_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/kuxolurabawewakexowekasep.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/javascript_to_hex.pdf
    • https://cdn.shopify.com/s/files/1/0434/6822/6725/files/26338118245.pdf
    • https://cdn.shopify.com/s/files/1/0433/8106/3838/files/preparazione_al_celi_3_b2_livello_intermedio.pdf
    • https://cdn.shopify.com/s/files/1/0436/9930/6650/files/textbook_of_systematic_botany.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000089d8.bin
2345a2f475132e8362d34b3595b7407aa2d565502de93ea9f532a0604cedf2c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89D8 5500 bytes
font_01_sfnt_off00009cad.bin
bc8276a11b0180642a58783a5c8e922310d5d2fc4f49771322d7552a4d412cb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CAD 10060 bytes

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