Malicious PDF — malware analysis report

Static analysis result for SHA-256 516b42379538f3d4…

MALICIOUS

PDF

44.3 KB Created: 2020-08-17 01:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dc59e73f94fda863eedc4baad6eb388 SHA-1: 654bcc0e4418a398a757042d0ae7ca08b5eb2558 SHA-256: 516b42379538f3d40eb1768098a75562da453dee6fc6a82f9767c601231ace63
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used to create link farms for SEO manipulation or to direct users to malicious sites. One of the primary links, 'https://ttraff.com/pify?keyword=bullet+bike+sound+free', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the document's purpose is to drive traffic to this malicious domain. No scripts were extracted, limiting the analysis of further execution chains.

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=bullet+bike+sound+free
    • http://files.yycfoamwars.ca/uploads/1/3/1/3/131383283/wudabaripunu.pdf
    • http://kumot.iaches.org/uploads/1/3/1/4/131454165/risowuruzibatevag.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83390791822.pdf
    • https://cdn.shopify.com/s/files/1/0434/2490/7414/files/profil_negara_amerika_serikat.pdf
    • https://cdn.shopify.com/s/files/1/0432/1578/2048/files/rosol.pdf
    • https://cdn.shopify.com/s/files/1/0435/0191/2224/files/80075567074.pdf
    • https://cdn.shopify.com/s/files/1/0432/7908/9824/files/69309330990.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/74166044938.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8890/files/dubutevigani.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/33847268867.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/49008575471.pdf
    • https://cdn.shopify.com/s/files/1/0439/7016/6942/files/84532861290.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6264/files/moninopa.pdf
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/83138505729.pdf
    • https://cdn.shopify.com/s/files/1/0431/9500/7137/files/kifusosirutodi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7969/5517/files/ap_calculus_ab_book.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_off00007095.bin
8681b5cfb617234823129d552d651fdb42b9adfc912f4b15329c391df1665ea6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7095 4944 bytes
font_01_sfnt_off00008170.bin
8d84623420f5e65557176d7ae5c742880934ae43c722b58af75ec0060f94a981		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8170 10212 bytes

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