Malicious PDF — malware analysis report

Static analysis result for SHA-256 374e251ec235fd98…

MALICIOUS

PDF

48.2 KB Created: 2020-08-10 09:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 556ff9b56e40e26a60e395c1efc1bfc8 SHA-1: 6fdc27ed96b29fa5af0ef5e50f9910b105a9ad14 SHA-256: 374e251ec235fd98fc67ad772aa55260107a4961a87d7c66cec35c5392162f54
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=autonomous+underwater+vehicle+project+pdf', suggesting a lure to download further content. The presence of a large number of external PDF links also indicates a link farm strategy.

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=autonomous+underwater+vehicle+project+pdf
    • http://files.lionessenergetics.com/uploads/1/3/2/7/132740270/zususojax.pdf
    • http://files.swancreekhempco.com/uploads/1/3/2/7/132740633/525ff48cf6.pdf
    • http://sutuxatap.bickleyandcompany.com/uploads/1/3/0/7/130775607/vasalivinuv.pdf
    • http://gazevupe.maximsdogue.com/uploads/1/3/1/6/131636725/e9fe4bca.pdf
    • http://files.harvestministriesfl.org/uploads/1/3/2/8/132814276/xufujuliseraj.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/gefil.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/xuritujetumorowij.pdf
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/72915202643.pdf
    • https://cdn.shopify.com/s/files/1/0431/1397/1861/files/76443525808.pdf
    • https://cdn.shopify.com/s/files/1/0431/0951/5413/files/vowekobufonovevugufugavu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/81747639829.pdf
    • https://cdn.shopify.com/s/files/1/0435/2904/4119/files/arthritis_uk_shoulder_pain_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bopeberovejaxurid.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/zaxibemororutivuraxeze.pdf
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/dakexubudepizamofotoze.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_off000070b6.bin
1d85c5dad63cc71ff541251d43fd01022e9bdb45465d23eb4d66f9e4474fe58b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B6 5496 bytes
font_01_sfnt_off00008348.bin
60a95fcbb76c0f5cfaaed768fce956fb811ab7395d355e8c9c1087115c8d90e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8348 9880 bytes
font_02_sfnt_off0000a516.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA516 4324 bytes

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