Malicious PDF — malware analysis report

Static analysis result for SHA-256 0257b149e8a3a469…

MALICIOUS

PDF

40.3 KB Created: 2020-09-03 04:09:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 478560084425bd2448a93b70eafe7d44 SHA-1: fcaf7ae9a6207a14ea2b0b64fdd9a41e6feb40de SHA-256: 0257b149e8a3a4699939abd492c3ffb63824017746d1b558bbf7c1c6324eec20
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector URL, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains text suggesting a lure related to meditation scripts. The presence of numerous external PDF links further indicates a link farm or SEO manipulation attempt, likely to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=guided+meditation+morning+script
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/754d94_37e530634c6a46178f29a90fef76be6e.pdf
    • https://static.usrfiles.com/ugd/90c678_a1d1df02f4d8481b911f23a35ed2cd63.pdf
    • https://static.usrfiles.com/ugd/b8c837_f233e7da2c0f4303a7fefed87be8e8ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f5505025d5b4854ab95cd8b73e34d04.pdf
    • https://static.usrfiles.com/ugd/ea5d7b_6d4f59b680a14aacb22257daf47f0d2d.pdf
    • https://static.usrfiles.com/ugd/83e584_c6075d3b9e294b04919941eee4aba685.pdf
    • https://static.usrfiles.com/ugd/865d50_db8cc4e101784f02b89944b8040d99f8.pdf
    • https://static.usrfiles.com/ugd/2ca22b_fa128df22bb14a0ea298641c24e40995.pdf
    • https://static.usrfiles.com/ugd/5438e3_82251ad331f341f3a368d086a55ede94.pdf
    • https://static.usrfiles.com/ugd/7d21c0_79fca4ab90144f2c935b30e725043bb7.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdc6f285362147cfa31e5fbd468489fa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/kevegufarijimupinebo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/maguju.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060b1.bin
541baa3688e34d8345b9b0387e1cbb3b3b3bb8d0d12d203664d50ceba9ae14f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x60B1 5392 bytes
font_01_sfnt_off000072f5.bin
d48eae47464be47e5323c5c67842dd1cfedc780f06ddc23f4e547a2c7a227f3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x72F5 9852 bytes