Malicious PDF — malware analysis report

Static analysis result for SHA-256 a962ddf4fa526549…

MALICIOUS

PDF

58.6 KB Created: 2020-08-11 02:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 479a551869d7270096dabae2c631b8a4 SHA-1: 775fd779921944d43489bff0bfb45f2919ce18d2 SHA-256: a962ddf4fa526549964b7aa1788569c6e4f26c59c0634847c49890a9cb9f1245
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a resource for learning English. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDFs, many hosted on Shopify. The primary malicious URL is https://ttraff.cc/pify?keyword=belajar+bahasa+inggris+pemula+pdf, which likely serves as the initial stage for a further malicious download or redirection.

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/pify?keyword=belajar+bahasa+inggris+pemula+pdf
    • http://files.loveforellie.com/uploads/1/3/1/8/131871740/7548276.pdf
    • http://files.iwstreecare.com/uploads/1/3/2/7/132740479/wogupu-zukokitoruwogog-zikezugufada-pubuzesilas.pdf
    • http://lirox.sebastianlarsen.com/uploads/1/3/1/1/131164250/4845531.pdf
    • http://wexiwetud.kaydencekroniclesbowtique.com/uploads/1/3/1/6/131606056/wopupokimim_laladibewu.pdf
    • http://files.platformfriesdressuurpaard.nl/uploads/1/3/1/3/131380728/bofimusajolif_xifolatovilaxab_jexoxigovogogi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5573/4166/files/midiwevububivizigivafam.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/converter_to_word_format.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zudofujavulasosajawigubi.pdf
    • https://cdn.shopify.com/s/files/1/0440/1197/8902/files/importance_of_branding_in_marketing.pdf
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/jolojadugedalit.pdf
    • https://cdn.shopify.com/s/files/1/0439/3048/4904/files/what_can_you_do_with_c.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/43004460085.pdf
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/39585295499.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3357/files/ferokagoxinul.pdf
    • https://cdn.shopify.com/s/files/1/0437/5920/6561/files/56669002167.pdf
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/fuvosubemuz.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/english_story_books_online.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008892.bin
0c14f07a26a1aea83af81a0b7524d2fd21a8d87e7a92e927af6927fc38f40909
pdf-font-stream PDF embedded font (sfnt) at offset 0x8892 5720 bytes
font_01_sfnt_off00009bcb.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BCB 1800 bytes
font_02_sfnt_off0000a459.bin
2b3568c9caa2bfc0feecd6e861c3b5e049b85ad92bf635195958980503ad40bf
pdf-font-stream PDF embedded font (sfnt) at offset 0xA459 10020 bytes
font_03_sfnt_off0000c6ef.bin
f267a97a42ed964490c0c36cf8d24d30f5cfc386ee24850e75bb3a4991f11828
pdf-font-stream PDF embedded font (sfnt) at offset 0xC6EF 16376 bytes