Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd0300310abdf69b…

MALICIOUS

PDF

51.0 KB Created: 2020-09-11 00:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 024afbde1bb40f66f1f206b901f45a67 SHA-1: c5d7b8707fba319666a6adc13a6b85cacd23fb70 SHA-256: bd0300310abdf69b573733d4e72802d6a0d8c78b5582ee7c4991542dba73ba86
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Climatology notes pdf' and the malicious URL, suggesting a lure to trick users into visiting harmful sites. The presence of a link farm further indicates a malicious intent to distribute traffic to potentially malicious destinations.

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.ru/wb?keyword=climatology%20notes%20pdf
    • http://files.4us2wire.com/uploads/1/3/1/4/131438639/5825105.pdf
    • http://zojasim.thoughtsfromthepaint.com/uploads/1/3/2/8/132815787/navodaromodi_fatiwun.pdf
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/badopoturovakepomone.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/10746152550.pdf
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/moeller_easy512-_ac-_rc_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/5021/3274/files/zileridodubimalukameza.pdf
    • https://static.usrfiles.com/ugd/63d3ad_223502e91145408395eee7b1edd972b9.pdf
    • https://static.usrfiles.com/ugd/353d00_3de4316c10524e66a0305d4b24d19d16.pdf
    • https://static.usrfiles.com/ugd/6c032c_b99b3d4041eb48b6a3ab85282f7b704b.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/zalasogofuxa.pdf
    • https://cdn.shopify.com/s/files/1/0439/2468/4955/files/problems_of_multilingualism_in_nigeria.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.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_off00007abe.bin
787893fdc2873f7325afa6946b640ee3e3d8e64411c915a4ee68dca271f58e1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABE 5176 bytes
font_01_sfnt_off00008c50.bin
68e4fbfb7fc86bc22be9ec6a0788e29b16a6a5c927e6f36a8f7fa51eb71be1d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C50 10984 bytes
font_02_sfnt_off0000b173.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB173 4324 bytes

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