Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3ed3b7d1db38ca4…

MALICIOUS

PDF

47.6 KB Created: 2020-08-25 23:52:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d04912062f84bd027435105e66b791a SHA-1: 13dca7a7d45874d1244e6e0369f0b122a84cdebd SHA-256: e3ed3b7d1db38ca48a6f5e98e7c762397569488a63fa9197d79fe44ab4d15974
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be part of a multi-stage attack where an archive requires a password, often to bypass initial security scans.

Heuristics 4

  • 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
  • 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=milesight+vms+pro+password
    • http://files.naturalsoaplady.ca/uploads/1/3/2/7/132740764/fce43300e.pdf
    • http://files.theopengate.shop/uploads/1/3/1/3/131380728/03cc0c2.pdf
    • http://files.hiawasseeapparel.com/uploads/1/3/2/7/132740978/tutika-wimabive-denajat-xapavebideruf.pdf
    • https://cdn.shopify.com/s/files/1/0437/2506/2298/files/39344276681.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/aao_aao_na_baby_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0433/0412/4580/files/95030746038.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/concise_clinical_pharmacology.pdf
    • https://cdn.shopify.com/s/files/1/0459/1678/2741/files/94980086785.pdf
    • https://cdn.shopify.com/s/files/1/0431/7570/6781/files/n_d_p_ka_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/48069844688.pdf
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/15283481399.pdf
    • https://cdn.shopify.com/s/files/1/0431/1334/9273/files/62071027054.pdf
    • https://cdn.shopify.com/s/files/1/0431/1279/2225/files/benefits_of_bilingualism_in_early_childhood.pdf
    • https://cdn.shopify.com/s/files/1/0438/2674/1405/files/openvpn_conf_file.pdf
    • https://cdn.shopify.com/s/files/1/0463/2782/4546/files/tivadakafebivuvazobiwaxu.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_off00007c01.bin
7e2f6d69503f87e57d9e970759f998d070017686b30f56555b949c0e3f3d815e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C01 5528 bytes
font_01_sfnt_off00008ec0.bin
3e2fd6cd5438579d011813caeb62675e645d46ac86bcd5c4dbd446360f529fc1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC0 10192 bytes