Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba74ac8fe1cf6841…

MALICIOUS

PDF

45.6 KB Created: 2020-08-15 04:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44667cca3096ac18f87bb3c9ad1264a6 SHA-1: 438dcc5bad7fab6949e0db735882455b58ce6cf2 SHA-256: ba74ac8fe1cf68413306bd2cef14a6e475223e61c0accb34371beaa94508fc8b
120 Risk Score

Malware Insights

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

The PDF document contains a deceptive lure, presenting itself as an answer key for 'Pu cet pg 2019'. It embeds a large number of links, including one to a known malicious redirector at `ttraff.com`. This redirector likely leads to further malicious content or exploits. The document's primary function appears to be driving traffic to this malicious infrastructure through social engineering.

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=pu+cet+pg+2019+answer+key
    • http://files.tanjazapolski.com/uploads/1/3/0/7/130776049/woduwepo_peneminivevabab.pdf
    • http://zetera.nikolebethea.com/uploads/1/3/1/6/131637136/4658697.pdf
    • http://files.collectivesociety.com/uploads/1/3/1/3/131379290/9a91d2c.pdf
    • http://files.primaryds.com/uploads/1/3/1/4/131406610/vewozopune.pdf
    • http://files.flexfitnessandrehab.com/uploads/1/3/0/7/130739892/bae45.pdf
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/jewuzilufekazatabixuxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/mepafevunomarinalaxupuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/0890/9734/files/vuvutewawuzatejefaxigojab.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/28684741462.pdf
    • https://cdn.shopify.com/s/files/1/0431/1325/0972/files/el_aprendiz_de_brujo_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/medical_dictionary_free_download_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/zimikebotixegovab.pdf
    • https://cdn.shopify.com/s/files/1/0437/8161/9861/files/variance_analysis_actual_vs_budget_with_explanation.pdf
    • https://cdn.shopify.com/s/files/1/0432/3016/7202/files/5176461621.pdf
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/carcinoma_de_clulas_escamosas_da_pele.pdf
    • https://cdn.shopify.com/s/files/1/0430/7668/1882/files/jisomobijojelamezogupa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9448/1823/files/pakonejub.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/54954714126.pdf
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/american_english_file_4.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_off0000729e.bin
a809518664f3633201eb00f1c5f7abc73e0e2a6d0e3cf858fded1f14ae67ca4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x729E 5808 bytes
font_01_sfnt_off0000868f.bin
587ed4969240792cd20da37d693fc934e15b43be69a66952facf86d03baad951
pdf-font-stream PDF embedded font (sfnt) at offset 0x868F 10388 bytes