Malicious PDF — malware analysis report

Static analysis result for SHA-256 f71570156f8f5e87…

MALICIOUS

PDF

50.3 KB Created: 2020-08-20 09:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e13e5466a2d0a205c4a9055679f24791 SHA-1: 8199ecfb50c13a80d754822be532b527539a2d82 SHA-256: f71570156f8f5e876b0aa5ef11a0b58e7a7c606984f618284a9379b116b41b5c
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a direct link to a known malicious redirector, ttraff.cc. The document body, though malformed, contains text suggesting a lure related to educational forms. The presence of numerous external PDF links, many hosted on Shopify, indicates an attempt to obscure the final malicious destination. The heuristic 'SE_MFA_LURE' suggests the ultimate goal is likely credential harvesting or MFA token theft.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=b.+ed+form+online+2019+bihar
    • http://files.geollect.com/uploads/1/3/0/8/130874526/329c6f5a7.pdf
    • http://files.marcosallis.com/uploads/1/3/2/6/132681713/6496127.pdf
    • http://files.freemantherapy.ca/uploads/1/3/1/8/131871535/fikitodovaxumaxe.pdf
    • http://files.fibctaos.com/uploads/1/3/0/7/130740458/pokon_pefekemezutef_kirarud.pdf
    • https://cdn.shopify.com/s/files/1/0428/6968/6431/files/46853287138.pdf
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/sujovajarafawuma.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/84694269091.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54748680829.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3370/files/13557051169.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/dapefafuji.pdf
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/html5_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0431/6987/4080/files/98376428177.pdf
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/remove_element_from_dictionary_python.pdf
    • https://cdn.shopify.com/s/files/1/0432/1568/3743/files/wetuwajotanunagofu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1624/0807/files/list_of_valid_email_addresses.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_off00006647.bin
0f8d08536bf8e015c3880cb5bc1062b314a74b2fc5db3ee9bec5602c59b88e10
pdf-font-stream PDF embedded font (sfnt) at offset 0x6647 5672 bytes
font_01_sfnt_off0000795d.bin
fd4eba428485093141c43d85d073fe59019456f134705b4b426ea885767ab18e
pdf-font-stream PDF embedded font (sfnt) at offset 0x795D 14916 bytes
font_02_sfnt_off0000a861.bin
307b92bf75bc5add3979c37522a2814e61c2e95d76751242c13dcb12ecc21128
pdf-font-stream PDF embedded font (sfnt) at offset 0xA861 5576 bytes