Malicious PDF — malware analysis report

Static analysis result for SHA-256 225ad1ed83472c51…

MALICIOUS

PDF

42.1 KB Created: 2020-08-27 14:19:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0207b75c76a738ee702814cafbc3ad27 SHA-1: 9105ac6681c48a4e433ceb072a9a93d937fb2458 SHA-256: 225ad1ed83472c51a7973db0d2e8591b6e3efaee99589fd0ef079da79c2a4134
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external links, suggesting an SEO poisoning or link farm attack. The primary malicious URL identified is https://ttraff.club/pify?keyword=warframe+amp+builder+guide. While the document body contains some text, it appears to be mostly metadata and corrupted content, making it difficult to ascertain a specific lure. No scripts were extracted from this sample.

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.club/pify?keyword=warframe+amp+builder+guide
    • http://lebakijeg.enermotech.com/uploads/1/3/1/8/131871674/9729807.pdf
    • http://fimij.flexgangent.com/uploads/1/3/1/3/131398540/torogudimiwol.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/rosetalasisovawozesalo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/52475277690.pdf
    • https://cdn.shopify.com/s/files/1/0436/1004/6621/files/system_understanding_aid_solution.pdf
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/woderegewezefimebosewipe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/medical_fitness_certificate_format_for_leave.pdf
    • https://cdn.shopify.com/s/files/1/0433/2349/0457/files/xatewafarofanim.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/63857983365.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/xuwobeginam.pdf
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/tamuka.pdf
    • https://cdn.shopify.com/s/files/1/0432/1571/6513/files/523590870.pdf
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/41968479007.pdf
    • https://cdn.shopify.com/s/files/1/0432/2364/6365/files/hma_vpn_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1025/files/ark_platform_saddle_boss_arena.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/39797173395.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_off000066da.bin
b9c7f99fe2fd85351278d02a49e3ad5ef87823a82fb2e347b0356b1fa8ebb061		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66DA 5336 bytes
font_01_sfnt_off000078e8.bin
96b0ba8ca105d86cc56eb0da5a651e70e9ab8a2aea7043c10de1066046724328		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E8 10152 bytes

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