Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fea8353c9625ebb…

MALICIOUS

PDF

40.3 KB Created: 2020-08-09 02:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d3129853f14e837efe53f9b50f17848 SHA-1: 02d8cf36ee4f489670fc2469136dc28fbb43c1cc SHA-256: 3fea8353c9625ebb2ef4a8d871e6abd970d0c4ecc09db72d6f9502da138cc8be
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=boraks+dan+formalin+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains. The document body is heavily obfuscated and contains embedded URLs, further supporting the redirection attempt. No scripts were extracted from this sample.

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=boraks+dan+formalin+pdf
    • http://tutogelag.katieshaw.co.uk/uploads/1/3/0/8/130814328/nivasajukabebege.pdf
    • http://files.metzking.com/uploads/1/3/0/9/130969659/5308472.pdf
    • http://files.thehomeschoolgarden.com/uploads/1/3/1/4/131453255/tolusefowis_vojedewumawit_refumot_jegotu.pdf
    • http://bujas.charlesprutting.com/uploads/1/3/2/6/132696111/levafaxenubo_zezufinasoma_vuwemejetuje.pdf
    • http://files.fertilityafter40.com/uploads/1/3/1/4/131406434/5653844.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/among_the_betrayed.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/nikitorovaseripomuxetopo.pdf
    • https://cdn.shopify.com/s/files/1/0452/0178/4983/files/birds_name_in_sanskrit.pdf
    • https://cdn.shopify.com/s/files/1/0435/5611/0487/files/benedicto_xvi_dios_es_amor.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/tuzomojojovexixerawodulit.pdf
    • https://cdn.shopify.com/s/files/1/0435/9471/1203/files/adenosina_5_trifosfato.pdf
    • https://cdn.shopify.com/s/files/1/0431/3418/9734/files/67890208242.pdf
    • https://cdn.shopify.com/s/files/1/0434/6871/8233/files/77913199732.pdf
    • https://cdn.shopify.com/s/files/1/0435/5260/4319/files/bejitigefivomijasi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/senuxejiweravivipasepab.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/koxatok.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_off00006161.bin
4485ed48c48231c16ca0c64bbbdaeec814ce1de8cadc276e1ac51bcaec74b35d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6161 5300 bytes
font_01_sfnt_off00007355.bin
987f13a6c8d61318f41ffd20762a31f1417f7bb2a47ce9d912d71e95d7f9831a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7355 9728 bytes

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