Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f5f5457c6d2b765…

MALICIOUS

PDF

40.7 KB Created: 2020-08-25 11:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87f29f624807f45cc75180d2e962def6 SHA-1: 2d503ab9c82ab169458666ca83ddfa93ff7e9f5c SHA-256: 4f5f5457c6d2b765c85b8df4d39d9d888bf06479224d18bacee209164828495d
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO link farms and redirector schemes. One prominent link, 'https://ttraff.com/pify?keyword=2d+barcode+font+for+crystal+reports', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of many Shopify links appears to be a tactic to mask the malicious intent by blending in with legitimate content.

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=2d+barcode+font+for+crystal+reports
    • http://files.stevesatterwhitephotography.com/uploads/1/3/1/4/131409090/jalofutad.pdf
    • http://files.ohleev.com/uploads/1/3/1/4/131452838/3966310.pdf
    • https://cdn.shopify.com/s/files/1/0439/0764/5595/files/nice_guidelines_ctg_interpretation_2014.pdf
    • https://cdn.shopify.com/s/files/1/0432/2839/7728/files/64249848072.pdf
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/abnormal_psychology_butcher_test_bank.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/analytical_skills_behavioral_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/2900/2390/files/33011443989.pdf
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/nidobedabinepebafototi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9313/8333/files/11746774288.pdf
    • https://cdn.shopify.com/s/files/1/0430/5738/1530/files/96727821545.pdf
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/autobiography_of_a_yogi_in_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0434/9257/3334/files/odia_bhajan_free_video.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/37584753088.pdf
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/excel_and_succeed_biology_book_3.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_off00006101.bin
4d612b5a425e0059e211c7b7c6b6f4d6a21850a894bf632327ceb82c0e54e3ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6101 5428 bytes
font_01_sfnt_off0000737c.bin
b27cd6571b6c2d9749f58dcfcdab39f38f3ff3f33ec6381f27cd42a3a0e5a5cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737C 9968 bytes

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