Malicious PDF — malware analysis report

Static analysis result for SHA-256 0262824a732ef70b…

MALICIOUS

PDF

49.3 KB Created: 2020-08-30 07:41:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e38d004ec70a41f29fa8b9d0734d369 SHA-1: 39fa39d77612ed81fe8e1b4ba127a5425dd13d37 SHA-256: 0262824a732ef70b2df60a9ad7f797a52faf782cbc33bf05d404a487fcf8dcd8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that lead to a known malicious redirector, indicating a phishing or scam attempt. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's content is designed to trick users into believing they have won a prize or are eligible for a large sum of money, requiring them to pay a fee or provide information. The presence of numerous external PDF links further supports the malicious intent, likely to distribute more malicious content or engage in link farming.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/wix?keyword=webadvisor+rosalind+franklin
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/7d21c0_db3fe1e45f394ffeb9b68cbf6892097b.pdf
    • https://static.usrfiles.com/ugd/b8c837_d60a498265e24d389fd958850a23d40f.pdf
    • https://static.usrfiles.com/ugd/9cb927_42963cd5573342aa89a59f0d9928117e.pdf
    • https://static.usrfiles.com/ugd/de60da_3e7ee0f8b9324d8b918b9046601fc119.pdf
    • https://static.usrfiles.com/ugd/086daf_c14193c34eca405b816a2e4048a0a880.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fc565d8a5fe4862abe0ccba70beb78f.pdf
    • https://static.usrfiles.com/ugd/b8c837_325fe64390ef4c86b4fdbe8b07b6f517.pdf
    • https://static.usrfiles.com/ugd/10a4aa_3b10270b8b5249e5849316f0b32886fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_bfbe03bef4f94b789c901e4f3cd1ffa9.pdf
    • https://static.usrfiles.com/ugd/b98abb_e96aa0a46f974ff687ab061ed6905795.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075b2.bin
4fca2f4b9bb1ac12c527d5ae510fe493889ab567856a446d5bca8a1720a93a4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B2 4888 bytes
font_01_sfnt_off00008661.bin
1038bbdf9994a39d121f7f2187603e20a3bddeeff8e3a5750cc1cabab34c636e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8661 10616 bytes
font_02_sfnt_off0000aaaf.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAAF 4324 bytes

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