Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6538797a6bad2ef…

MALICIOUS

PDF

40.0 KB Created: 2020-08-02 02:08:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bddd4b20820552e06ce669ed0b2a235b SHA-1: 6416ef3c2abbb7b7fbbc9434629fa1cf0d81ad2e SHA-256: e6538797a6bad2efd59e48bfc4285efd2922cae3ee0f2c5dee21606504ed61d8
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 malicious redirector links and a link farm. The embedded content, though heavily obfuscated, contains URLs that are part of this link farm, including a suspicious redirector URL. The primary attack pattern involves luring users through seemingly benign content to malicious infrastructure.

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=sufjan+stevens+chicago+lyrics
    • http://files.yourpremiersupplies.com/uploads/1/3/1/4/131453934/2da32887c.pdf
    • http://files.mawptacoma.com/uploads/1/3/1/8/131872087/8880272.pdf
    • http://files.zoeandjohn.com/uploads/1/3/0/9/130969436/kixasudevasak-jokodi-jodogatejamij.pdf
    • http://files.winzerfarmcda.com/uploads/1/3/1/6/131637658/b8269.pdf
    • http://files.beexploration.com/uploads/1/3/1/6/131606954/gijimurukuguwer_wesaro.pdf
    • https://cdn.shopify.com/s/files/1/0433/7208/5406/files/31881774175.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/21895923638.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72710717911.pdf
    • https://cdn.shopify.com/s/files/1/0431/6859/6117/files/53827606177.pdf
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/4362410942.pdf
    • https://cdn.shopify.com/s/files/1/0433/5376/8095/files/63751102742.pdf
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/xabuje.pdf
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/zedesanolowigokosakivu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8011/2545/files/82584133670.pdf
    • https://cdn.shopify.com/s/files/1/0433/3525/4171/files/tavidurojaga.pdf
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/2443323161.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_off00005d07.bin
bfa55323b3638e063a6fbf458c62b363797b591fa326be0c10cbf6cac2c91a3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D07 5484 bytes
font_01_sfnt_off00006fc4.bin
94f7ffeed74ae3e6e5b7a63576a03aff3aad274c45b428b0750a6b45efc783aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC4 10412 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.