Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ad2212bff3dd922…

MALICIOUS

PDF

40.1 KB Created: 2020-08-24 23:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a78a297dac1f639ebc3e14ec802203ca SHA-1: c641aff3454dbdc2f77683e03f5b2ab41676370b SHA-256: 2ad2212bff3dd92208c2041aea3c6aba089d374af4a286290520911e39a22e5e
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic specifically identifying a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The presence of a large link farm suggests an attempt to distribute malicious content or phish users through numerous external resources.

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.cc/pify?keyword=bts+fake+love+bbmas
    • http://bofenovev.oriontrainingsystems.com/uploads/1/3/1/4/131437736/59837c17260.pdf
    • http://files.servinggodgracefully.net/uploads/1/3/2/7/132740343/fidor.pdf
    • http://files.mheine.com/uploads/1/3/2/6/132682851/vinat.pdf
    • http://sozini.thsfrenchexchange.com/uploads/1/3/0/8/130814328/266756.pdf
    • http://fuzudiz.pillagerboosterclub.com/uploads/1/3/0/8/130873830/dusobemat.pdf
    • https://cdn.shopify.com/s/files/1/0437/5547/1002/files/alizarin_synthesis.pdf
    • https://cdn.shopify.com/s/files/1/0435/5263/7091/files/12603223362.pdf
    • https://cdn.shopify.com/s/files/1/0437/8840/2839/files/la_biblia_de_estudio_macarthur_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/arduino_beginner.pdf
    • https://cdn.shopify.com/s/files/1/0434/7750/0057/files/ap_transport_llr_test_questions.pdf
    • https://cdn.shopify.com/s/files/1/0435/7727/8623/files/fungal_sample_subnautica.pdf
    • https://cdn.shopify.com/s/files/1/0435/5774/8897/files/plasma_technology_for_wastewater_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0430/7274/9721/files/40402574160.pdf
    • https://cdn.shopify.com/s/files/1/0439/5070/2750/files/bhagavad_gita_chapter_16.pdf
    • https://cdn.shopify.com/s/files/1/0437/7870/3521/files/jabifugozitiperibumazovi.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_off000059fd.bin
b2412a3635fd3326ce7eb18bf55233b1c3057e3ce8efec856c6d22a31dbfbdfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59FD 5132 bytes
font_01_sfnt_off00006b70.bin
919b94bc6b20472fa92f1f0f28df5bcaa974f84df42cfff968ec43d7eece30d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B70 13028 bytes

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