Malicious PDF — malware analysis report

Static analysis result for SHA-256 13b197968f052bcf…

MALICIOUS

PDF

58.2 KB Created: 2020-07-09 05:58:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9db68179295d11d4a950774a06f5753c SHA-1: 4fa42301f1e9049af86bc778c837bd20314b8b9c SHA-256: 13b197968f052bcf18d7ed12d92c4a019b46e3952637a2804fe9e145f9e288bc
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to redirector infrastructure or SEO link farms. The primary link, https://ttraff.cc/wb?keyword=2018%20volkswagen%20passat%20manual%20transmission, is flagged as a malicious redirector. The document's content appears to be generated for SEO purposes, likely to drive traffic to malicious sites.

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.cc/wb?keyword=2018%20volkswagen%20passat%20manual%20transmission
    • http://files.nicoledanesi.com/uploads/1/3/1/4/131408913/552010.pdf
    • http://files.illuminat.co/uploads/1/3/1/8/131858287/fokawiwixupetimo.pdf
    • http://files.emmauswellbeingmatters.com/uploads/1/3/1/4/131405940/3355321.pdf
    • http://files.whatchelseaswatching.com/uploads/1/3/1/6/131606395/5436943.pdf
    • http://files.djmoosetrax.com/uploads/1/3/1/4/131483440/fuboguvasuk.pdf
    • http://files.threefeatherstheatre.com/uploads/1/3/0/7/130739069/59363baf0.pdf
    • http://files.avenamedical.com/uploads/1/3/2/6/132680852/numojex.pdf
    • http://files.afmsupplements.com/uploads/1/3/2/3/132302815/972851.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://wufubupaku.files.wordpress.com/2020/06/89058627989.pdf
    • https://warezofokel.files.wordpress.com/2020/06/82586249362.pdf
    • https://rofatekarem.files.wordpress.com/2020/06/55489678430.pdf
    • https://zokejepu.files.wordpress.com/2020/07/kigevufalefiwawegakazox.pdf
    • https://zatulosevu.files.wordpress.com/2020/07/fewajukewup.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40035930655.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59854739703.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000868c.bin
e1e67008b1cc3ca47c6f4ce8513dd69d2972fdeb10e19bcabba592683603a19b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x868C 5664 bytes
font_01_sfnt_off000099c2.bin
c75e1df1a1975a9b192813a71a5e9775a817c0b09af7fd4a81a84cff8b164878		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99C2 14140 bytes
font_02_sfnt_off0000c678.bin
84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC678 16060 bytes

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