Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c1e2a145e0122f9…

MALICIOUS

PDF

47.7 KB Created: 2020-08-07 12:45:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f644baa7a6596b558e16649c80c4ab7d SHA-1: 302fb3307a22701483a0f09ff7968f5a848e318e SHA-256: 4c1e2a145e0122f9d7a58de7996a592518200710c5a948ea282b254c7010d096
168 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text fragments and a URL that suggest a lure related to a 'car bill of sale'. This, combined with the 'ADVANCE_FEE_SCAM_LURE' heuristic, indicates the document is designed to trick users into clicking malicious links, likely as part of an advance-fee fraud scheme. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=car+bill+of+sale+ga+pdf
    • http://files.100x35online.com/uploads/1/3/1/0/131070151/da987a30.pdf
    • http://files.detroitbiblequizzing.org/uploads/1/3/0/7/130739379/familovi.pdf
    • http://files.magistrasolomon.org/uploads/1/3/0/8/130873983/gixopora-wijikiwiratobok.pdf
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/wadapavodi.pdf
    • https://cdn.shopify.com/s/files/1/0439/3094/3643/files/gireb.pdf
    • https://cdn.shopify.com/s/files/1/0445/6343/1588/files/modelo_de_certificado_medico_bolivia.pdf
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/bovuzem.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/vexuza.pdf
    • https://cdn.shopify.com/s/files/1/0431/8819/1396/files/2929214736.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/67720038245.pdf
    • https://cdn.shopify.com/s/files/1/0437/8846/8376/files/58471087223.pdf
    • https://cdn.shopify.com/s/files/1/0436/5480/7717/files/acdc_big_balls_song.pdf
    • https://cdn.shopify.com/s/files/1/0428/1335/8247/files/74989964753.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/41860471882.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1621/files/creer_preterite_conjugation.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_off00007b3d.bin
51790949b559923a1df4e72d898ed91d56ba1342a2bca414008d5e5f2cb3e486
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3D 5256 bytes
font_01_sfnt_off00008d24.bin
12a15087ff40f6114b23ce4ecc07dc5cd2cf7c3eb6c6adafaec7af0e2a3e178c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D24 10820 bytes