Malicious PDF — malware analysis report

Static analysis result for SHA-256 594ddef8538fe268…

MALICIOUS

PDF

38.7 KB Created: 2020-07-09 21:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97b911581cb14a037a5c9a557f589c10 SHA-1: ab0ceb82521bfc71195eee321241bad31f546637 SHA-256: 594ddef8538fe2687786f7a0b0ef41320aeb171132c054311af24891caeda1af
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with multiple links pointing to potentially malicious redirectors and file hosting sites. The primary link identified is `https://ttraff.com/wb?keyword=capitalization%20and%20punctuation%20worksheets%20grade%208`, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains similar URLs, reinforcing the malicious intent of directing users to external resources.

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.com/wb?keyword=capitalization%20and%20punctuation%20worksheets%20grade%208
    • http://files.newclearrain.com/uploads/1/3/1/8/131855992/5820839.pdf
    • http://files.evolveastrology.com/uploads/1/3/1/4/131409508/a6526042ad.pdf
    • http://files.packtenna.com/uploads/1/3/1/4/131482930/4181662.pdf
    • http://files.frankhagancontracting.com/uploads/1/3/2/6/132681404/zatamutofineve.pdf
    • http://files.snowypeaksoap.com/uploads/1/3/2/3/132302973/a7512c13cdce8e.pdf
    • http://files.simplicityaccountingllc.com/uploads/1/3/2/8/132816066/tepipagikelitefalexo.pdf
    • http://files.johnblanke.com/uploads/1/3/1/4/131453725/70573fbba25.pdf
    • http://files.mestizostacos.com/uploads/1/3/1/4/131453823/jowubap.pdf
    • http://files.bestoftimeswatch.com/uploads/1/3/1/3/131379749/e4facd24be.pdf
    • https://sirozujulad.files.wordpress.com/2020/07/ziluparovag.pdf
    • https://raxebovar.files.wordpress.com/2020/07/noxiroxozevijofo.pdf
    • https://butuvifivi.files.wordpress.com/2020/07/32391951732.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67572949107.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72645751706.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23535065851.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mikawewetekiwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rerivavegexem.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_off000058b1.bin
ab6e5f7fc5ce66284ef7722000fa4fcffa5a327738684aed609aa533b5f0e589		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58B1 5640 bytes
font_01_sfnt_off00006bed.bin
80fbbd7bbcef54afe65458722064db0d21850372d127abe6b5068db90d32c0e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BED 9972 bytes

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