Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5272884778d6feb…

MALICIOUS

PDF

49.8 KB Created: 2020-08-14 22:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 481a8c5a46ec2a6d4bf47cb0f1ea3414 SHA-1: da8c3aac4ce6ee89ad19b58cebc4580e260c838f SHA-256: f5272884778d6feb228719d2e5cd6f9bc1e19eaf72379ee9df04f907cf1f1ef3
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to a known malicious redirector, ttraff.com, disguised as a Bangla book PDF. It also contains a mass external PDF link farm, with many links pointing to shopify.com, likely for SEO poisoning or to obscure the malicious redirector. The embedded URLs suggest a phishing or redirection scheme to deliver further payloads.

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=bangla+book+pdf+islamic
    • http://wojigas.correctyourconcrete.com/uploads/1/3/1/8/131856772/nevumiti-gojumiwovizuke-fexuwinasilo.pdf
    • http://dufane.columsands.com/uploads/1/3/1/1/131163992/aa57e41b1a7ab.pdf
    • http://files.hinghamspeechtherapy.com/uploads/1/3/0/9/130969080/jetetevo-bikagefexiludet-nugineti-guzuguwoto.pdf
    • http://files.normanconquest1066.org/uploads/1/3/0/7/130776821/buwuv_xodoxadix_rigajefu_dekesovulede.pdf
    • http://files.lilarose.org/uploads/1/3/1/3/131380480/pupogudetanowa_lewaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/5630/0186/files/no_love_august_alsina_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0434/9824/2214/files/alan_walker_faded_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/fedutorizanawurise.pdf
    • https://cdn.shopify.com/s/files/1/0440/7944/8216/files/bowling_alone_essay.pdf
    • https://cdn.shopify.com/s/files/1/0438/6488/3355/files/zopatewevuket.pdf
    • https://cdn.shopify.com/s/files/1/0430/0229/8521/files/wudapisaxo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3208/3612/files/bloodborne_wooden_shield.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/20423190183.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3809/files/psychological_perspectives_in_education.pdf
    • https://cdn.shopify.com/s/files/1/0437/7228/0981/files/dilixakijobexusowomux.pdf
    • https://cdn.shopify.com/s/files/1/0429/5950/3519/files/juzixu.pdf
    • https://cdn.shopify.com/s/files/1/0439/2180/1371/files/nami_aram_build.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_off00006352.bin
bc2e7779bd004c71a91ed933181983633ae855785caef502241f1211b3914951
pdf-font-stream PDF embedded font (sfnt) at offset 0x6352 5632 bytes
font_01_sfnt_off00007668.bin
e874d4abc9b0ae348e13fe4fed4b8cd7f8fed67b01d5946250d370920ac7ee9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7668 10296 bytes
font_02_sfnt_off000097a5.bin
f1903d09e425ec6a4173fe85d5138b146a61c90f476257d95ed9df8b6d714151
pdf-font-stream PDF embedded font (sfnt) at offset 0x97A5 9948 bytes