Malicious PDF — malware analysis report

Static analysis result for SHA-256 c76450a07d502e96…

MALICIOUS

PDF

50.0 KB Created: 2020-08-06 14:33:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ec3f647eb2c090e6648a6a221845429 SHA-1: f209c1c94ea1bb9b71caa7092fe608ad82901b67 SHA-256: c76450a07d502e963eee805516bbe9e0a1ad600c0c9e72f3e454fbf5452bbe66
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The document body, though obfuscated, contains text related to 'ejercicios de paises y nacionalidades en frances pdf' and includes the malicious URL, suggesting a lure to disguise the malicious intent. The PDF also hosts a large number of external links, many pointing to Shopify domains, which is characteristic of a link farm used to improve search engine ranking for malicious content.

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.com/pify?keyword=ejercicios+de+paises+y+nacionalidades+en+frances+pdf
    • http://files.hearsesigns.com/uploads/1/3/1/4/131482953/d47ce.pdf
    • http://temok.chroniclesofjudy.com/uploads/1/3/1/0/131070767/mimifilev.pdf
    • http://files.barrenoneballet.com/uploads/1/3/1/4/131483281/cb2cdad.pdf
    • http://files.jaspreetsran.com/uploads/1/3/0/7/130738524/rojita.pdf
    • https://cdn.shopify.com/s/files/1/0431/1708/4833/files/20858996644.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/savudavifodixezuzomozov.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/jquery_change_font_color.pdf
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/28170637025.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2635/files/95535772713.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/65949357342.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/99884050609.pdf
    • https://cdn.shopify.com/s/files/1/0431/7695/1965/files/70807493213.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0957/files/the_membrane_gungeon.pdf
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/fukirukojepid.pdf
    • https://cdn.shopify.com/s/files/1/0432/9521/1680/files/xirakuzisigixol.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_off00006904.bin
1d4e52f76312827e37d4d8205ac07203795d45b9b63c33066c2fcf32b78b61a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6904 4992 bytes
font_01_sfnt_off00007a0f.bin
73f5b7b8ecd3c1718ec411542d97647731d24c629b2e23ff33de8818e0f39310
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0F 16516 bytes
font_02_sfnt_off0000ab0c.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB0C 4324 bytes