Malicious PDF — malware analysis report

Static analysis result for SHA-256 40bf06b366276307…

MALICIOUS

PDF

34.7 KB Created: 2020-08-11 01:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0a6485dba6b0ccf1901a4673fca0e58 SHA-1: 33e5e935e3096c21f9003e0946a38be95c501800 SHA-256: 40bf06b3662763072fc9a9e6a3004c0376d87442fd913e0725203a86e2ed5b6c
150 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.cc, which is likely used to funnel victims to malicious sites. The document also contains a large number of external links, many pointing to Shopify-hosted PDFs, suggesting a link farm for SEO poisoning or traffic generation. The presence of these links and the ML classification strongly indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=laporan+keuangan+bursa+efek+indonesia+pdf
    • http://files.prosplanning.com/uploads/1/3/1/8/131871416/dedorewatoduraniwomo.pdf
    • http://files.earthcarecollective.org/uploads/1/3/1/4/131437983/wuvaxu.pdf
    • http://files.quielclass.com/uploads/1/3/2/6/132695200/4beb92fbe218210.pdf
    • https://cdn.shopify.com/s/files/1/0439/3595/7147/files/89720008048.pdf
    • https://cdn.shopify.com/s/files/1/0434/5010/6018/files/16302229170.pdf
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/ririkozamolozakiwokaxizim.pdf
    • https://cdn.shopify.com/s/files/1/0431/4031/7350/files/guxufasexogiseve.pdf
    • https://cdn.shopify.com/s/files/1/0440/3570/2949/files/fobefipebadaviwenof.pdf
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/nawoxija.pdf
    • https://cdn.shopify.com/s/files/1/0438/4469/8272/files/metallica_nothing_else_matters_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/6344/2598/files/21756856529.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/82923161037.pdf
    • https://cdn.shopify.com/s/files/1/0438/9657/0024/files/bahasa_arab_mesir.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/276074922.pdf
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/simple_present_and_past_tense_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/9363389874.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/54488376977.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_off0000495f.bin
5d54a2e0da7d0e65f271e0cdae5691042eb8db03d7e0bc7f70138901e813ba7e
pdf-font-stream PDF embedded font (sfnt) at offset 0x495F 5320 bytes
font_01_sfnt_off00005b85.bin
007e9f3b7388ba5f744f7347a5099fa4a6669aefcc1f92ae9e88002ea0eed049
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B85 9972 bytes