Malicious PDF — malware analysis report

Static analysis result for SHA-256 4239d2dbd9281e2c…

MALICIOUS

PDF

48.4 KB Created: 2020-08-30 10:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b0d2e1358a40edc340f544fbb648233 SHA-1: e261ed4b8f3439a731cfbc73a68b12677b727a5a SHA-256: 4239d2dbd9281e2cbfeecf3d4d0a1feba0199013d03fc607944de5206e3854cd
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, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a PDF link to a known malicious redirector at 'https://ttraff.cc/wix?keyword=audi+b6+parts'. This suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted from this sample.

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/wix?keyword=audi+b6+parts
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/lojixiwunififivojuv.pdf
    • https://cdn.shopify.com/s/files/1/0452/5421/3792/files/medisikorawije.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7484/files/catalytic_cracking_unit.pdf
    • https://cdn.shopify.com/s/files/1/0459/9942/3647/files/attach_file_to_email_template_salesforce.pdf
    • https://static.usrfiles.com/ugd/d3758e_9e0cfc62356c49e79b7c3548e981678b.pdf
    • https://static.usrfiles.com/ugd/63d3ad_42e297f402ca42f8be761545fe0167c7.pdf
    • https://static.usrfiles.com/ugd/e73fea_d965d808e1fa414786dc8419bb614b82.pdf
    • https://static.usrfiles.com/ugd/b8c837_b06b80f368354e09bc7238c2ff9dcb16.pdf
    • https://static.usrfiles.com/ugd/5b5da7_5b6dca84224047189068244de8b3f607.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/6003/files/maths_formulas_in_hindi.pdf
    • https://cdn.shopify.com/s/files/1/0459/8877/4045/files/piano_sheet_music_learn.pdf
    • https://cdn.shopify.com/s/files/1/0435/2537/4103/files/web_ontology_language_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/3401/6924/files/microsoft_document_imaging_to_converter.pdf
    • https://cdn.shopify.com/s/files/1/0434/5813/4182/files/46304214013.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5667/files/asterix_i_obelix_komiksy.pdf
    • https://cdn.shopify.com/s/files/1/0439/6669/3534/files/zorekobevowafumexupesuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65105912314.pdf
    • https://cdn.shopify.com/s/files/1/0433/3957/9546/files/charlie_brown_jr_acustico_mtv_320kbps.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_off000066e3.bin
c6bd44089cd07aca61d28dd800ae7fa3cbd731aeb6ed51e5a47204669b7aa55d
pdf-font-stream PDF embedded font (sfnt) at offset 0x66E3 5204 bytes
font_01_sfnt_off0000788e.bin
b1e7396535e9cf411095789552be84cd10633d81c818acdb3534dd313ce19ee7
pdf-font-stream PDF embedded font (sfnt) at offset 0x788E 11812 bytes
font_02_sfnt_off00009fe2.bin
713933360072c9d59346590fad668f98c3603c6d2b72ed941ce85481f6af0b74
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE2 16060 bytes